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【简答题】
索引;(价格、费用等的)指数
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参考答案:
举一反三
【单选题】Soon they ____________ the water which ____________ the pipe.
A.
ran out; ran out of
B.
ran out of; ran out of
C.
ran out; ran out
D.
ran out of; ran out
【单选题】At last her money for singing lessons _________. [     ]
A.
ran out of
B.
ran out
C.
ran away
D.
ran after
【单选题】【C8】
A.
ran after
B.
ran into
C.
ran over
D.
ran to
【单选题】全波整流电路整流电压的脉动系数为( )。
A.
30%
B.
40%
C.
50%
D.
66%
【单选题】“众人熙熙,如享太牢”是( )说的。
A.
老子
B.
孔子
C.
孟子
D.
韩非子
【单选题】慢性焦虑症即广泛性焦虑。其症状较多,但不包括( )
A.
震颤
B.
胸部紧压感
C.
出汗、面色苍白、心悸
D.
尿频、尿急
E.
气透不过来,濒死感
【简答题】The speaker ________ his notes before the lecture. A) ran down B) ran into C) ran out D) ran over
【简答题】A.ran after B.ran into C.ran over D.ran to
【单选题】The printer ______paper.
A.
ran into
B.
ran out of
C.
ran without
D.
ran over
【简答题】三相半波可控整流电路,输出到负载的平均电压波形脉动频率为 HZ;而三相全控桥整流电路,输出到负载的平均电压波形脉动频率为 HZ;这说明 电路的纹波系数比 电路要小。
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