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The disadvantage of the non－synchronous motor is that it requiresoand it produces a low starting－torque
A.much initial current
B.direct current
C.little initial current
D.constant current
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更多 “ The disadvantage of the non－synchronous motor is that it requiresoand it produces a low starting－torque A.much initial currentB.direct currentC.little initial currentD.constant current ” 相关考题
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