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【判断题】
电路中有功功率与实际功率之间的比值成为功率因素。功率因素低，则电流中的谐波含量越高，对电网产生污染，破坏电网的平衡度，无功损耗亦增加。A.
正确
B.
错误
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举一反三
【简答题】A．To find a worker and follow him closely. B．To find a person you admire and make friends with him. C．To find a person you respect and watch carefully how he acts. D．To make friends with a model you a...
【单选题】你驾驶的机动船正沿着航道行驶出港,看到前方另一机动船沿航道行驶进港,与你船构成碰撞危险,如果该港港章有进港船舶避让出港船舶的规定,则下列说法正确的是__。1适用“对遇局面”条款,双方应各自向右转向;2按照港章规定,他船应给你船让路;3你船应尽量靠近右舷航道外缘行驶。
A.
①②
B.
①②③
C.
②③
D.
③
【简答题】In order to find out whether a person is telling the truth or not
【简答题】三极管有三种工作状态,它们分别是:( )状态、饱和状态和( )状态。
【简答题】三极管有三种工作状态,它们分别是 状态、 状态和 状态。
【单选题】Find Yourself Packing It On? Blame Friends Obesity can spread from person to person, much like a virus, researchers are reporting today. When one person gains weight, close friends tend to gain weight...
A.
Their friends.
B.
Their neighbours.
C.
Their family members.
D.
Their colleagues.
【简答题】A．To find a worker and follow him closely. B．To find a person you admire and make friends with him. C．To find a person you respect and watch carefully how he acts. D．To make friends with a model you a...
【简答题】A．To find a worker and follow him closely. B．To find a person you admire and make friends with him. C．To find a person you respect and watch carefully how he acts. D．To make friends with a model you a...
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