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【单选题】
若三级放大电路中各级电压放大倍数分别为:第一级 Au 1 =10dB 、第二级 Au 2 =30dB 、第三级 Au 3 =20dB ,则该多级放大电路将输入信号放大了( )倍。A.
30
B.
60
C.
100
D.
1000
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反馈参考答案：
举一反三
【简答题】乙公司现有一台设备由于性能等原因决定提前报废,原价500 000元,已计提折旧450 000元,未计提减值准备,报废时的残值变价收入20 000元,报废清理过程中发生清理费用3 500元。有关收入、支出均通过银行办理结算。假定不考虑相关税收影响,编制乙公司的会计分录
【单选题】--- What’s your family rules? --- We shouldn’t talk ____ food in our mouths while having meals.
A.
with
B.
in
C.
of
D.
at
【单选题】Please note that we require the amendment L/C by the 30 th September.
A.
to
B.
for
C.
of
D.
in
【判断题】While having small talk with the visitor, remember to choose safe topics for your talk.
A.
正确
B.
错误
【单选题】Please note that we require the amendment _____ L/C by the 30th September.
A.
to
B.
for
C.
in
D.
with
【判断题】While having small talk with the visitor, remember to choose safe topics for your talk.
A.
正确
B.
错误
【单选题】Small communities are disappearing with some of them having _____ from the face of the earth, while others are dying slowly
A.
vanished
B.
established
C.
approved
D.
perceived
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