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【简答题】
简述空气制动装置的缓解作用和制动作用。空重车的转换装置、缓解法、降压法的概论？
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【单选题】Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, ______ the number of people infected with the virus is going up sharply.
A.
when
B.
which
C.
that
D.
where
【单选题】Asynchronous counters are often called ________ counters.
A.
flip-flop
B.
toggle
C.
binary
D.
ripple
【简答题】A．regards B．suggests C．supports D．counters
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【简答题】According to the author, long queues at counters are caused by ________. A) the diminishing supply of good staff B) lack of cooperation among staff C) inefficient staff D) deliberate understaffing
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【判断题】Synchronous counters are generally faster than asynchronous counters in operation.
A.
正确
B.
错误
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