【单选题】变压器一、二次绕组的匝数之比为25,二次侧电压为400V,一次侧电压为( )V。
【单选题】变压器一、二次绕组的匝数之比为25,二次侧电压为400V,一次侧电压为()。
【简答题】A.He has used some heavy-duty tape around the door. B.He has applied some super glue to keep the hinges on tightly. C.He has pushed a box against the door to keep it shut. D.He has simply replaced the...
【单选题】变压器一、二次绕组的匝数之比为25,二次侧电压为400V,一次侧电压为()。
【单选题】变压器一、二次绕组的匝数之比为25,二次侧电压为400V,一次侧电压为()。
【单选题】对计算机病毒出现的原因,以下说法正确的是
【单选题】The waterproof super glue originates in ______
A.
the mussel's tongue-shaped foot
B.
the channel of the mussel's foot
C.
the thread given off by the mussel
D.
some glands in the mussel's body
【单选题】对计算机病毒出现的原因,以下说法正确的是()。