1) They overcame numerous obstacles and difficulties they met with in the course of their research. 2) Instead of replying to my words he gave me the article he referred to in his report. 3) Microphones may be divides into classes according to the service they are intended for. 4) Properties of steel depend also on heat treatment the metal has been subjected to. 5) This is the principle the mercury thermometer is based upon. 6) He delivered such a report that everybody was pleased. 7) The usual courses which post-graduates usually take are: a foreign language, philosophy, management and marketing, computers, speciality, and some others. 8) The college the new assistant arrived from supplied him with excellent recommendations. 9) The university he arrived at was just starting up a new laboratory. 10) It was the kind of laboratory he was willing to work in. 11) The scientist asked his new assistant whether there was any field of physics he was especially interested in. 12) This was the very man he had been told about by the senior assistant, Maxwell by name. 13) The report he made after their delegation had visited our laboratory shows that he has finally realized the importance of the work we are doing here. 14) The postgraduate teaching prof. N. is responsible for is of great interest for him. 15)The subject they have chosen for the discussion is connected, with the physics of fluids.
