【判断题】离心式压气机的工作特点:是在低转速时可能发生堵塞,在高转速时可能引起喘振
【简答题】听短文填空。 Information Sheet Before you read over the paper: (1) Don't _______ your answers. When you start the exam; (2) _______ the easy problems and do them first; (3) Spend _______ time on it. If you ...
【简答题】Read over your composition and ____________ every sentence that is not related to the subject.
【简答题】动词填空。 1. _____ your family _____ (read) books on Sundays? 2. I find your shoes over there. But where _____ (be) mine? 3. Look! The boy _____ (have) a kite in his hand. 4. Let's help the old man _____ ...