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【单选题】
We are in favor of your proposal that the meeting ______. A. B. was put off C. should put off D. is to put offA.
should be put off
B.
was put off
C.
should put off
D.
is to put off
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举一反三
【简答题】下列抗心律失常药中首关消除明显，只能非肠道给药的是() A奎尼丁 B普鲁卡因胺 C利多卡因 D胺碘酮 E索他洛尔
【简答题】Write out the name of the symbol of Ac ( )
【单选题】The role of the AC contactor ( ).
A.
turn on/off the main circuit
B.
turn on/off the control circuit
C.
protection of main circuit
D.
protection of control circuit
【简答题】简述线路停电的操作顺序？
【单选题】The way to change the running direction of ac motor is
A.
Rotor series resistance
B.
Stator series resistance
C.
Adjust the phase sequence of the three-phase power supply
D.
Adjust the phase sequence of two phases in the three-phase power supply
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