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【单选题】
This violin must be ________ carefully.A.
controlled
B.
dealt
C.
handled
D.
operated
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反馈参考答案：
举一反三
【单选题】How did the woman get to the Peak?
A.
By the Peak bus.
B.
By the Peak elevator.
C.
By the Peak tram.
D.
By the Peak boat.
【简答题】在题如图所示收音机接收回路中，u为接收信号。若已知L=0.26mH，调节C使电路在890kHz下产生串联谐振，试求C值。若天线接收到的信号为5μV时，电容两端的信号电压为0.4mV，求该回路的品质因数、通频带及回路中的电阻R。
【单选题】Our result ( ) consistent with earlier findings showing that the best alloying addition is trivalent Ga. (10 分)
A.
was
B.
are
C.
were
D.
is
【单选题】The peak season is _______________.
A.
the season to climb the peak
B.
the season to wear PEAK shoes
C.
the hot season of travelling
D.
the cold season of travelling
【单选题】{ In this half-wave rectifier circuit, determine the peak inverse voltage (PIV) across the diode. }
A.
3V m .
B.
-2V m .
C.
V m .
D.
2V m .
【判断题】The peak time tp corresponds to one-half cycle of the frequency of damped oscillation.
A.
正确
B.
错误
【单选题】Which peak is the highest peak of Mt.Huangshan?
A.
Celestial Capital
B.
Lotus Peak
C.
Brightness Apex
D.
Back of a Carp
【简答题】电路如下图所示,已知 。试求电容 两端的电压相量 。
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