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【多选题】
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批示
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【简答题】单词拼写。 1. At last he __________(辞职) from his post and went back to Changsha. 2. The experiment he ____________(进行；实施) turned out to be a success. 3. John's ___________(雄心) is to swim across all the bi...
【单选题】There was nothing we could do that day ____ him down but _____ him in the house.
A.
calm, lock
B.
to calm, to lock
C.
calming, locking
D.
to calm, lock
【简答题】1892年，国际轮滑联盟在（）成立，使轮滑运动向国际化、正规化发展。
【单选题】He was sent to ______ prison for five years. When he was in ______ prison, his wife often went to ______ prison to visit him. At last he was released from ______ prison.
A.
/; /; /; /
B.
a; the; the; the
C.
/; /; the; /
D.
the; the; the; the
【单选题】下列情况中,构成商品有效需求的是( )。
A.
春运将至,甲想要购买北京到广州的火车票,他备好钱,但售票网站显示车票已全部售罄
B.
乙是一名小学生,由于喜欢看篮球比赛想购买美职篮现场比赛的门票
C.
丙月薪800,他看到2015年城市跨年焰火觉得很漂亮,于是也想要举办一场
D.
Iphone 6上市,丁虽然很想买,但他刚刚购买了Iphone 5S,暂时手头没有余钱
【单选题】交流放大电路中,改变RC的电阻值,将会使放大电路的( )。
A.
电压放大倍数改变
B.
静态工作点改变,IC减小
C.
静态工作点改变,IC增大
D.
电压放大倍数改变,同时也改变了静态值UCE
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