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【单选题】
三相异步电机在什么情况下,转差率是下列数值: 0A.
刚启动时
B.
正常运行时
C.
空载时
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【简答题】John is more hard-working than his sister, ________ he failed in the exam.
【单选题】Mr. John is one of those men who appears to be friendly, however, it is very hard to deal with him.(改错题)
A.
appears
B.
friendly
C.
however
D.
to deal with
【简答题】John Smith is working hard to make his dream a _____(real).
【单选题】John: Is there a chance that Nick is not guilty?
A.
Is it possible that Nick is not guilty?
B.
Is it true that Nick is not guilty?
C.
Do you think Nick is guilty?
【单选题】John is working hard to promote his new book. He hopes a lot of people will buy it online.
A.
write
B.
market
【简答题】年代地层单位
【单选题】－Mum! math is too hard for me. －John, work hard, you'll find it easy. [ ]
A.
but
B.
or
C.
and
D.
so
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