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【单选题】
图题 1.11 所示, 已知稳压管 D Z 的参数为 , U Z =6V,P Z =150mV,I Zmin =5mV 。 试判断图中 稳压电路能否正常稳压( )。A.
不能稳压 ，因为电阻 R 1 的阻值过小。
B.
不能稳压 ，因为电阻 R 1 的阻值过大。
C.
能稳压 ，因为电阻 R 1 的阻值满足要求。
D.
能稳压 ，因为对电阻 R 1 的阻值没有要求。
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皮皮学刷刷变学霸
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【简答题】常用的信号复用有4种形式:()复用TDM、()复用FDM、()复用WDM和多路复用CDM
【单选题】听力原文： The outgoing parliament in the Palestinian territories has voted to give new powers to the President Mohammad Abbas. The move has been met with anger from the militant group Hamas which won the ...
A.
Fatah Party intended to irritate the militant group Hamas.
B.
Fatah Party wanted to strengthen the legislative power.
C.
Fatah Party was defeated in the Palestinian election.
D.
Fatah Party suffered a stunning defeat in the constitutional court.
【单选题】The nurse was pleased to find that the kids were all in high ______.
A.
spirits
B.
minds
C.
power
D.
energy
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