Студопедия — ATC RULES AND PROCEDURES 28 страница
Студопедия Главная Случайная страница Обратная связь

Разделы: Автомобили Астрономия Биология География Дом и сад Другие языки Другое Информатика История Культура Литература Логика Математика Медицина Металлургия Механика Образование Охрана труда Педагогика Политика Право Психология Религия Риторика Социология Спорт Строительство Технология Туризм Физика Философия Финансы Химия Черчение Экология Экономика Электроника

ATC RULES AND PROCEDURES 28 страница






A third man, at a little table to her right, facing still more dials, leaned across to the one who had been speaking. "I make it an hour and seventeen minutes in. That's using forecast winds, but if the front's moved faster than expected, it could be less."

 

"We are going back, aren't we?" Mrs. Quonsett found it hard to restrain the excitement in her voice.

 

Demerest nodded. "But you're the only one who knows, besides ourselves. For the time being you must keep it a secret, and above all, Guerrero---that's the man with the case---mustn't find out."

 

Ada Ouonsett thought breathlessly: was this really happening to her? It was all quite thrilling, like something on TV. It was a little frightening perhaps, but she decided not to think too much about that. The main thing was---she was here, a part of it all, hobnobbing with the captain, sharing secrets, and what would her daughter say about that?

 

"Well, will you help us?"

"Oh, of course. I expect you want me to see if I can get that case away..."

"No!" Vernon Demerest swung farther around, leaning over the back of his seat for emphasis. He said sternly, "You must not so much as put your hands on that case, or even near it."

"If you say so," Mrs. Quonsett acknowledged meekly, "I won't."

"I do say so. And remember, it's important that Guerrero have no idea we know about his case or what's inside. Now, as I did with Miss Meighen a little while ago, I'm going to tell you exactly what to do when you go back to the cabin. Please listen carefully."

When he had finished, the little old lady from San Diego permitted herself a small, brief smile. "Oh, yes; yes, I think I can do that."

She was getting out of her seat, with Gwen about to open the flight deck door for them to go, when Demerest asked, "That flight from Los Angeles you stowed away on---they said you were trying to reach New York. Why?"

She told him about being lonely sometimes on the West coast, and wanting to visit her married daughter in the east.

"Grandma," Vernon Demerest said, "if we pull this off I'll personally guarantee that not only will any trouble you're in be taken care of, but this airline will give you a ticket to New York, and back, first class."

Mrs. Quonsett was so touched, she almost cried.

"Oh, thank you! Thank you!" For once she found it hard to speak. What a remarkable man, she thought; such a kind, dear man!

 

HER GENUINE emotion as she was about to leave the flight deck helped Mrs. Quonsett in her progress through the first class compartment and then into the tourist cabin. With Gwen Meighen grasping her arm tightly and shoving her along, the old lady dabbed at her eyes with her lace handkerchief, giving a tearful, credible performance of acute distress. She reminded herself, almost gleefully beneath her tears, that it was her second performance tonight. The first, when she pretended to be ill, had been staged in the terminal for the young passenger agent, Peter Coakley. She had been convincing then, so why not now?

The performance was sufficiently authentic for one passenger to ask Gwen heatedly, "Miss, whatever she's done, do you have to be so rough?"

Gwen replied tartly, already aware that she was within hearing of the man Guerrero, "Sir, please don't interfere."

As they passed into the tourist cabin, Gwen closed the draw curtain in the doorway separating the two passenger sections. That was part of Vernon's plan. Looking back the way they had come, toward the front of the aircraft, Gwen could see the flight deck door slightly ajar. Behind it, she knew, Vernon was waiting, watching. As soon as the curtain between first class and tourist was closed, Vernon would move aft and stand behind it, watching through a chink which Gwen was careful to leave open. Then, when the proper moment came, he would fling the curtain aside and rush through swiftly.

At the thought of what was going to happen within the next few minutes---whatever the outcome---once more an icy fear, a sense of premonition, came to Gwen. Once more she conquered it. Reminding herself of her responsibilities to the crew, and to the other passengers---who were oblivious of the drama being played out in their midst---she escorted Mrs. Quonsett the remaining distance to her seat.

The passenger Guerrero glanced up quickly, then away. The small attaché case, Gwen saw, was still in the same position on his knees, his hands holding it. The man from the aisle seat next to Mrs. Quonsett's---the oboe player---stood up as they approached. His expression sympathetic, he moved out to let the old lady in. Unobtrusively, Gwen moved in front of him, blocking his return. The aisle seat must remain unoccupied until Gwen moved out of the way. Gwen's eyes caught a flicker of movement through the chink she had left in the doorway curtain. Vernon Demerest was in position and ready.

"Please!" Still standing in the aisle, Mrs. Ouonsett turned pleadingly, tearfully to Gwen. "I beg of you---ask the captain to reconsider. I don't want to be handed over to the Italian police..."

Gwen said harshly, "You should have thought of that before. Besides, I don't tell the captain what to do."

"But you can ask him! He'll listen to you."

D. O. Guerrero turned his head, took in the scene, then looked away.

Gwen seized the old lady's arm. "I'm telling you---get into that seat!"

Ada Quonsett's voice became a wail. "All I'm asking is to be taken back. Hand me over there, not in a strange country!"

From behind Gwen the oboe player protested, "Miss, can't you see the lady's upset?"

Gwen snapped, "Please keep out of this. This woman has no business here at all. She's a stowaway."

The oboist said indignantly, "I don't care what she is. She's still an old lady."

Ignoring him, Gwen gave Mrs. Quonsett a shove which sent her staggering. "You heard me! Sit down and be quiet."

Ada Quonsett dropped into her seat. She screamed, "You hurt me! You hurt me!"

Several passengers were on their feet, protesting.

D. O. Guerrero continued to look straight ahead. His hands, Gwen saw, were still on the attaché case.

Mrs. Quonsett wailed again.

Gwen said coldly, "You're hysterical." Deliberately, hating what she had to do, she leaned into the section of seats and slapped Mrs. Quonsett hard across the face. The slap resounded through the cabin. Passengers gasped. Two other stewardesses appeared incredulous. The oboist seized Gwen's arm; hastily she shook herself free.

What happened next occurred so swiftly that even those closest to the scene were uncertain of the sequence of events.

Mrs. Quonsett, in her seat, turned to D. O. Guerrero on her left. She appealed to him, "Sir, please help me! Help me!"

His features rigid, he ignored her.

Apparently overcome by grief and fear, she reached toward him, flinging her arms hystericafly around his neck. "Please, please!"

Guerrero twisted his body away, trying to release himself. He failed. Instead, Ada Quonsett wound her arms around his neck more tightly. "Oh, help me!"

Red-faced and close to choking, D. O. Guerrero put up both hands to wrench her away. As if in supplication, Ada Quonsett eased her grasp and seized his hands.

At the same instant, Gwen Meighen leaned forward toward the inside seat. She reached out and in a single even movement---almost without haste---she grasped the attaché case firmly and removed it from Guerrero's knees. A moment later the case was free and in the aisle. Between Guerrero and the case, Gwen and Ada Quonsett were a solid barrier.

The curtain across the doorway from the first class cabin swept open. Vernon Demerest, tall and impressive in uniform, hurried through.

His face showing relief, he held out his hand for the attaché case. "Nice going, Gwen. Let me have it."

With ordinary luck the incident---except for dealing with Guerrero later---would have ended there. That it did not was solely due to Marcus Rathbone.

Rathbone, until that moment, was an unknown, unconsidered passenger, occupying seat fourteen-D across the aisle. Although others were unaware of him, he was a self-important, pompous man, constantly aware of himself.

In the small Iowa town where he lived he was a minor merchant, known to his neighbors as a "knocker." Whatever others in his community did or proposed, Marcus Rathbone objected to. His objections, small and large, were legendary. They included the choice of books in the local library, a plan for a community antennae system, the needed disciplining of his son at school, and the color of paint for a civic building. Shortly before departing on his present trip he had organized the defeat of a proposed sign ordinance which would have beautified his town's main street. Despite his habitual "knocking," he had never been known to propose a constructive idea.

Another peculiarity was that Marcus Rathbone despised women, including his own wife. None of his objections had ever been on their behalf. Consequently, the humiliation of Mrs. Ouonsett a moment earlier had not disturbed him, but Gwen Meighen's seizure of D. O. Guerrero's attaché case did.

To Marcus Rathbone this was officialdom in uniform---and a woman at that!---impinging on the rights of an ordinary traveler like himself. Indignantly, Rathbone rose from his seat, interposing himself between Gwen and Vernon Demerest.

At the same instant, D. O. Guerrero, flushed and mouthing incoherent words, scrambled free from his seat and the grasp of Ada Quonsett. As he reached the aisle, Marcus Rathbone seized the case from Gwen and---with a polite bow---held it out. Like a wild animal, with madness in his eyes, Guerrero grabbed it.

Vernon Demerest flung himself forward, but too late. He tried to reach Guerrero, but the narrowness of the aisle and the intervening figures---Gwen, Rathbone, the oboe player---defeated him. D. O. Guerrero had ducked around the others and was heading for the aircraft's rear. Other passengers, in seats, were scrambling to their feet. Demerest shouted desperately, "Stop that man! He has a bomb!"

The shout produced screams, and an exodus from seats which had the effect of blocking the aisle still further. Only Gwen Meighen, scrambling, pushing, clawing her way aft, managed to stay close to Guerrero.

At the end of the cabin---like an animal still, but this time cornered---Guerrero turned. All that remained between him and the aircraft's tail were three rear toilets; light indicators showed that two were empty, one was occupied. His back to the toilets, Guerrero held the attaché case forward in front of him, one hand on its carrying handle, the other on a loop of string now visible beneath the handle. In a strained voice, somewhere between a whisper and a snarl, he warned, "Stay where you are! Don't come closer!"

Above the heads of the others, Vernon Demerest shouted again. "Guerrero, listen to me! Do you hear me? Listen!"

There was a second's silence in which no one moved, the only sound the steady background whine of the plane's jet engines. Guerrero blinked, continuing to face the others, his eyes roving and suspicious.

"We know who you are," Demerest called out, "and we know what you intended. We know about the insurance and the bomb, and they know on the ground, too, so it means your insurance is no good. Do you understand?---your insurance is invalid, canceled, worthless. If you let off that bomb you'll kill yourself for nothing. No one---least of all your family---will gain. In fact, your family will lose because they'll be blamed and hounded. Listen to me! Think."

A woman screamed. Still Guerrero hesitated.

Vernon Demerest urged, "Guerrero, let these people sit down. Then, if you like, we'll talk. You can ask me questions. I promise that until you're ready, no one will come close." Demerest was calculating: If Guerrero's attention could be held long enough, the aisle might be cleared. After that, Demerest would try to persuade Guerrero to hand over the case. If he refused, there was still a chance that Demerest could leap forward, throw himself bodily onto Guerrero and wrest the case free before the trigger could be used. It would be a tremendous risk, but there was nothing better.

People were easing nervously back into their seats.

 

"Now that I've told you what we know, Guerrero; now you know that it isn't any good going on, I'm asking you to give me that case." Demerest tried to keep his tone reasonable, sensing it was important to keep talking. "If you do as I say, I give you my solemn word that no one in this airplane will harm you."

 

D. O. Guerrero's eyes mirrored fear. He moistened thin lips with his tongue. Gwen Meighen was closest to him.

Demerest said quietly, "Gwen, take it easy. Try to get in a seat," If he had to leap, he wanted no one in the way.

Behind Guerrero the door of the occupied toilet opened. An owlish young man with thick glasses came out. He stopped, peering short-sightedly. Obviously he had heard nothing of what was going on.

Another passenger yelled, "Grab the guy with the case! He's got a bomb!"

At the first "click" of the toilet door, Guerrero half turned. Now he lunged, thrusting the man with glasses aside, and entered the toilet which the newcomer had vacated.

As Guerrero moved, Gwen Meighen moved too, remaining close behind him. Vernon Demerest, several yards away, was struggling fiercely aft, down the still crowded aisle.

The toilet door was closing as Gwen reached it. She thrust a foot inside and shoved. Her foot stopped the door from closing, but the door refused to move. Despairing, as pain shot through her foot, she could feel Guerrero's weight against the other side.

In D. O. Guerrero's mind the last few minutes bad been a jumbled blur. He had not fully comprehended everything that had occurred, nor had he heard all that Demerest said. But one thing penetrated. He realized that like so many of his other grand designs, this one, too, had failed. Somewhere---as always happened with whatever he attempted---he had bungled. All his life had been a failure. With bitterness, he knew his death would be a failure too.

His back was braced against the inside of the toilet door. He felt pressure on it, and knew that at any moment the pressure would increase so that he could no longer hold the door closed. Desperately be fumbled with the attaché case, reaching for the string beneath the handle which would release the square of plastic, actuating the clothespin switch and detonating the dynamite inside. Even as he found the string and tugged, he wondered if the bomb be had made would be a failure also.

In his last split second of life and comprehension, D. O. Guerrero learned that it was not.

 

 

THE EXPLOSION aboard Trans America Flight Two, The Golden Argosy, was instantaneous, monstrous, and overwhelming. In the airplane's confined space it struck with the din of a hundred thunderclaps, a sheet of flame, and a blow like a giant sledge hammer.

 

D. O. Guerrero died instantly, his body, near the core of the explosion, disintegrating utterly. One moment he existed; the next, there were only a few small, bloody pieces of him left.

The aircraft fuselage blew open.

Gwen Meighen, who, next to Guerrero, was nearest the explosion, received its force in her face and chest.

An instant after the dynamite charge ripped the aircraft skin, the cabin decompressed. With a second roar and tornado force, air inside the aircraft---until this moment maintained at normal pressure---swept through the ruptured fuselage to dissipate in the high altitude near-vacuum outside. Through the passenger cabins a dark engulfing cloud of dust surged toward the rear. With it, like litter in a maelstrom, went every loose object, light and heavy---papers, food trays, liquor bottles, coffeepots, hand luggage, clothing, passengers' belongings---all whirling through the air as if impelled toward a cyclopean vacuum cleaner. Curtains tore away. Internal doors---flight deck, storage, and toilets---wrenched free from locks and hinges and were swept rearward with the rest.

Several passengers were struck. Others, not strapped in their seats, clung to any handhold as the wind and suction drew them inexorably toward the rear.

Throughout the aircraft, emergency compartments above each seat snapped open. Yellow oxygen masks came tumbling down, each mask connected by a short plastic tube to a central oxygen supply.

Abruptly the suction lessened. The aircraft's interior was filled with mist and a savage, biting cold. Noise from engines and wind was overwhelming.

Vernon Demerest, still in the aisle of the tourist cabin where he had held himself by instinctively seizing a seatback, roared, "Get on oxygen!" He grabbed a mask himself.

Through knowledge and training, Demerest realized what most others did not: The air inside the cabin was now as rarefied as that outside, and insufficient to support life. Only fifteen seconds of full consciousness remained to everyone, unless oxygen was used at once from the aircraft's emergency system.

Even in five seconds, without the aid of oxygen, a degree of lessened judgment would occur.

In another five seconds a state of euphoria would make many decide not to bother with oxygen at all. They would lapse into unconsciousness, not caring.

 

Airlines had long been urged, by those who understood the hazards of decompression, to make pre-flight announcements about oxygen equipment more definite than they were. Passengers should be told, it was argued:

The instant an oxygen mask appears in front of you, grab it, stick your face into it, and ask questions after. If there is a real decompression, you haven't a single second to spare. If it's a false alarm, you can always take the mask off later; meanwhile it will do no harm.

 

Pilots who took decompression tests were given a simple demonstration of the effect of oxygen lack at high altitudes. In a decompression tank, with an oxygen mask on, they were told to begin writing their signatures, and part way through the exercise their masks were removed. The signatures tailed off into a scrawl, or nothingness. Before unconsciousness occurred, the masks were put back on.

The pilots found it hard to believe what they saw on the page before them.

 

Yet airtine managements, theorizing that more definite oxygen advice might create alarm among passengers, persisted in the use of innocuous flight announcements only. Smiling stewardesses, seeming either bored or amused, casually demonstrated the equipment while an unseen voice---hurrying to get finished before takeoff---parroted phrases like:

In the unlikely event... and... Government regulations require that we inform you.

No mention was ever made of urgency, should the equipment be required for use.

 

As a result, passengers became as indifferent to emergency oxygen facilities as airlines and their staffs appeared to be. The overhead boxes and monotonous, always-alike demonstrations were (passengers reasoned) something dreamed up by a bunch of regulation-obsessed civil servants. (Yawn!) Obviously the whole thing was largely a charade, insisted on by the same kind of people who collected income taxes and disallowed expense accounts.

So what the hell!

 

Occasionally, on regular flights, oxygen mask housings opened accidentally, and masks dropped down in front of passengers. When this happened, most passengers stared curiously at the masks but made no attempt to put them on. Precisely that reaction---though the emergency was real---had occurred aboard Flight Two.

Vernon Demerest saw the reaction and in a flash of sudden anger remembered his own, and other pilots', criticisms of soft-pedaled oxygen announcements. But there was no time to shout another warning, nor even to think of Gwen, who might be dead or dying only a few feet away.

Only one thing mattered: somehow to get back to the flight deck, and help save the airplane if he could.

Breathing oxygen deeply, he planned his movement forward in the aircraft.

Above every seat section in the tourist cabin, four oxygen masks had dropped---one for the occupant of each seat, plus a spare to be grabbed if necessary by anyone standing in the aisle. It was one of the spares which Demerest had seized and was using.

But to reach the flight deck he must abandon this mask and use a portable one that would permit him to move forward freely.

He knew that two portable oxygen cylinders were stowed, farther forward, in an overhead rack near the first class cabin bulkhead. If be could make it to the portable cylinders, either one would sustain him for the remaining distance from the bulkhead to the flight deck.

He moved forward to the bulkhead one seat section at a time, using one spare hanging mask after another as he went. A couple of seat sections ahead, he could see that aff four masks were being used by seated passengers; the three seat occupants, including a teen-age girl, had one mask each; the fourth mask was being held by the teenager over the face of an infant on its mother's lap alongside. The girl seemed to have taken charge and was motioning to others near her what to do. Demerest swung toward the opposite side of the cabin, saw a spare mask hanging, and taking a deep breath of oxygen, he let go the one he had and reached for the other spare. He made it, and breathed deeply once again. He still had more than half the tourist cabin length to go.

He had made one more move when he felt the aircraft roll sharply to the right, then dive steeply down.

Demerest hung on. He knew that, for the moment, there was nothing he could do. What happened next was dependent on two things: how much damage the explosion had done, and the skill of Anson Harris, at the flight controls, alone.

 

ON THE FLIGHT deck, the events of the last few seconds had occurred with even less warning than at the rear. After the departure of Gwen Meighen and Mrs. Quonsett, followed by Vernon Demerest, the two remaining crew members---Anson Harris and Second Officer Cy Jordan---had no knowledge of what was going on in the passenger cabins behind them until the dynamite blast rocked the aircraft, followed an instant later by explosive decompression.

As in the passenger compartments, the cockpit filled with a thick, dark cloud of dust, almost immediately sucked out as the flight deck door smashed free from its lock and hinges, and flew outward. Everything loose on the flight deck was snatched up, to be carried back, joining the debris-laden whirlwind.

Under the flight engineer's table, a warning horn began blaring intermittently. Over both front seats, bright yellow lights flashed on. Both horn and lights were signals of dangerously low pressure.

A fine mist---deathly cold---replaced the cloud of dust. Anson Harris felt his eardrums tighten painfully.

But even before that, he had reacted instantly---the effect of training and experience of many years.

On the long, uphill road to airline captaincy, pilots spent arduous hours in classrooms and simulators, studying and practicing airborne situations, both normal and emergency. The objective was to instill quick, correct reactions at all times.

The simulators were located at important air bases and all major scheduled airlines had them.

From outside, a simulator looked like the nose of an aircraft, with the rest of the fuselage chopped off; inside, was everything included in a normal flight deck.

Once inside a simulator, pilots remained shut up for hours, imitating the precise conditions of a long distance flight. The effect, when the outside door was closed, was uncanny; even motion and noise were present, creating the physical effect of being airborne. All other conditions paralleled reality. A screen beyond the forward windows could conjure up airports and runways, enlarging or receding to simulate takeoff and landing. The only difference between a simulator flight deck and a genuine one was that the simulator never left the ground.

Pilots in a simulator conversed with a nearby control room, as they would on radio in the air. Within the control room, skilled operators duplicated air traffic control procedures and other flight conditions. The operators could also feed in adverse situations, without warning, to pilots. These ranged through multiple engine failure, to fire, violent weather, electrical and fuel problems, explosive decompression, instrument malfunction, and other assorted unpleasantness. Even a crash could be reproduced; sometimes simulators were used in reverse to find out what bad caused one.

Occasionally an operator would feed in several emergencies at once, causing pilots to emerge later, exhausted and sweat-drenched. Most pilots coped with such tests; the few who didn't had the fact noted in their records, were re-examined, and afterward watched carefully. The simulator sessions continued, several times a year, through every stage of a pilot's career until retirement.

The result was: When a real emergency occurred, airline pilots knew exactly what to do, and did it, without fumbling or loss of precious time. It was one of many factors which made travel by scheduled airlines the safest means of transportation in human history. It had also conditioned Anson Harris to instant action, directed toward the salvation of Flight Two.

In the drill for explosive decompression one rule was fundamental: the crew took care of themselves first. Vernon Demerest observed the rule; so did Anson Harris and Cy Jordan.

They must be on oxygen at once---even ahead of passengers. Then, with full mental faculties assured, decisions could be made.

Behind each pilot's seat a quick-don oxygen mask---resembling a baseball catcher's mask----was hanging. As he had practiced countless times, Harris ripped off his radio headset, then reached over his shoulder for the mask. He tugged, so that a holding clip snapped open, and slapped the mask on. As well as a connection to the airplane's oxygen supply, it contained a microphone. For listening, now his headset was removed, Harris changed a selector, actuating a speaker overhead.

Behind him, Cy Jordan, with identical swift movements, did the same.

In another reflex movement, Anson Harris took care of passengers. Cabin oxygen systems worked automatically in event of pressure failure; but as a precaution---in case they didn't---over the pilots' heads was an override switch. It ensured positive release of passenger masks and sent oxygen flowing into them. Harris flipped the switch.

He dropped his right hand to the throttles, pulling all four off. Thz aircraft slowed.

It must be slowed still more.

Left of the throttles was a speed brake handle. Harris pulled it fully toward him. Along the top surface of both wings, spoilers rose up, inducing drag, and causing further slowing.

Cy Jordan silenced the warning horn.

So far, all procedures had been automatic. Now, a moment for decision had arrived.

It was essential that the aircraft seek a safer altitude below. From its present height of twenty-eight thousand feet, it must descend some three and a half miles to where the air was denser so that passengers and crew could breathe and survive without supplemental oxygen.

The decision Harris had to make was---should the descent be slow, or a high-speed dive?

 

Until the past year or two, the instruction to pilots in event of explosive decompression was: dive immediately. Tragically, however, the instruction had resulted in at least one aircraft breaking apart when a slower descent might have saved it. Nowadays, pilots were cautioned:

Check for structural damage first. If the damage is bad, a dive may worsen it, so go down slowly.

 

Yet that policy, too, had hazards. To Anson Harris, they were instantly apparent.

Undoubtedly Flight Two had sustained structural damage. The sudden decompression proved it, and the explosion which bad occurred just before---though still less than a minute ago---might already have done great harm. In other circumstances, Harris would have sent Cy Jordan to the rear to learn how bad the damage was, but since Demerest was gone, Jordan must stay.

But however serious the structural damage, there was another factor, perhaps more cogent. The air temperature outside the aircraft was minus fifty degrees centigrade. Judging by the near-paralyzing cold which Harris felt, the inside temperature must also be near that. In such intense cold, no one without protective clothing could survive for more than minutes.







Дата добавления: 2015-09-15; просмотров: 460. Нарушение авторских прав; Мы поможем в написании вашей работы!



Обзор компонентов Multisim Компоненты – это основа любой схемы, это все элементы, из которых она состоит. Multisim оперирует с двумя категориями...

Композиция из абстрактных геометрических фигур Данная композиция состоит из линий, штриховки, абстрактных геометрических форм...

Важнейшие способы обработки и анализа рядов динамики Не во всех случаях эмпирические данные рядов динамики позволяют определить тенденцию изменения явления во времени...

ТЕОРЕТИЧЕСКАЯ МЕХАНИКА Статика является частью теоретической механики, изучающей условия, при ко­торых тело находится под действием заданной системы сил...

Этапы трансляции и их характеристика Трансляция (от лат. translatio — перевод) — процесс синтеза белка из аминокислот на матрице информационной (матричной) РНК (иРНК...

Условия, необходимые для появления жизни История жизни и история Земли неотделимы друг от друга, так как именно в процессах развития нашей планеты как космического тела закладывались определенные физические и химические условия, необходимые для появления и развития жизни...

Метод архитекторов Этот метод является наиболее часто используемым и может применяться в трех модификациях: способ с двумя точками схода, способ с одной точкой схода, способ вертикальной плоскости и опущенного плана...

Обзор компонентов Multisim Компоненты – это основа любой схемы, это все элементы, из которых она состоит...

Кран машиниста усл. № 394 – назначение и устройство Кран машиниста условный номер 394 предназначен для управления тормозами поезда...

Приложение Г: Особенности заполнение справки формы ву-45   После выполнения полного опробования тормозов, а так же после сокращенного, если предварительно на станции было произведено полное опробование тормозов состава от стационарной установки с автоматической регистрацией параметров или без...

Studopedia.info - Студопедия - 2014-2024 год . (0.009 сек.) русская версия | украинская версия