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【多选题】
改装电压表满量程校准该如何操作?A.
根据计算的串联电阻,增加电源电压或减小电阻使改装表达到满量程,记录标准表电压值
B.
增加电源电压,若改装表先达到满量程,则应减小改装表串联的电阻,使改装表和标准表同时达到满量程
C.
增加电源电压,若标准表先达到满量程,则应减小改装表串联的电阻,使标准表和改装表同时达到满量程
D.
观察改装表和标准表,反复调整改装表串联电阻和电源电压,使两表同时达到满量程
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举一反三
【简答题】如图所示电路中,a、b间的等效电阻Rab= ____Ω。
【简答题】电路如图所示,试求独立电压源电流、独立电流源电压以及受控电流源电压。
【单选题】X: Excuse me, could you please show me the nearest way to the library? Y: Sorry, I’m new here, too. Question: What does Y's response indicate?
A.
Y doesn’t know the way.
B.
Y hates to look old.
C.
The library is new.
D.
Y lives near the library.
【单选题】--- Excuse me, I was told I could find Professor Li here. --- And you ______. Anything I can do for you?
A.
have
B.
had
C.
did
D.
do
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