單項(xiàng)選擇題Ammeter is to measure the ().

A.current
B.voltage
C.power
D.frequency


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題The starting current of an a-cmotor is () the rated current.

A.the same as
B.much larger than
C.less than
D.equals