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【单选题】
根据《中华人民共和国人民警察使用警械和武器条例》的规定，人民警察对聚众扰乱车站、码头、民用航空站、运动场等公共场所秩序的，经警告无效的， ( )。A.
应当使用制服性、驱逐性警械
B.
可以使用武器
C.
可以使用约束性警械
D.
可以使用制服性、驱逐性警械
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举一反三
【单选题】We _____ his luggage; his brother carried it himself.
A.
needn’t have carried
B.
didn’t need carrying
C.
needed to have carried
D.
didn’t need to carry
【简答题】We ______ his luggage; his brother carded it himself． A．needn't have carried B．didn't need carrying C．needed to have carried D．didn't need to CalTy
【单选题】Knowing that the slightest mistake meant losing his job, the waiter carried the expensive glasses______ from the kitchen.
A.
cautiously
B.
gravely
C.
profoundly
D.
radically
【简答题】控制系统PID控制器中引入（）作用是为了消除余差，引入（）作用是为了克服容量滞后；但积分的引入会使系统产生振荡现象。
【单选题】We his luggage; his brother carried it himself.
A.
needn’t have carried
B.
didn’t need carrying
C.
needed to have carried
D.
didn’t need to carry
【单选题】He expected his orders (A) to be carried out (B) on spot (C) .
A.
orders
B.
be carried out
C.
on spot
【单选题】Doubting that the traveler carried drugs, the Customs officer stopped him and _______ his suitcase, but found nothing at all.
A.
looked up
B.
went through
C.
searched for
D.
referred to
【单选题】It is desired that his order______ as soon as possible.
A.
will be carried out
B.
should be carried out
C.
must be carried out
D.
would be carried out
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