【简答题】听力原文:Professor: Hello, Dinesh. Come in. You said on the phone that you had a few problems to discuss with me. Tell me what they are and I'll see what I can do to help. Dinesh: Thank you very much, pro...
【简答题】The examiner asks you and your partner to talk together. You may be asked to solve a problem or try to come to a decision about something. For example, you might be asked to decide the best way to use...
【单选题】Dave: What causes people to have stress? Tim: As I said, all humans have stress. The problem is too much stress for a long period of time. When this happens, a person is in trouble. Various situations...
A.
Tell us what we can do in our spare time.
B.
Is it true that men generally have more stress than women?
C.
Tell us what we can do when we have too much stress.
D.
Do you think today's world is more stressful than the world of 50 years ago?
【判断题】车床的进给运动即小拖板的直线运动。A. √ B. ×
【单选题】If you heard a ‘crackling’ noise in centrifugal pump, the most probable cause of the problem would be ___.
C.
excess discharge pressure
D.
excessive net positive suction head B