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【单选题】
当信号频率等于放大电路的fL或fH时,放大倍数的值约下降到中频时的A.
0.5倍
B.
0.7 倍
C.
0.8倍
D.
0.9倍
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皮皮学刷刷变学霸
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【简答题】How will the tax be determined if a foreigner resident who has worked in China for more than 183 days? He should be subject to ______.
【单选题】The accident ________ to the man who _________ to be a foreigner, so it is hard to deal with. [ ]
A.
occurs; happened
B.
happened; occurred
C.
came about; occurred
D.
occurred; happened
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