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搜题
【单选题】
工程上常用（ ）表示两个线圈磁耦合的紧密程度。A.
耦合系数 K
B.
复杂系数 K
C.
集合系数 K
D.
合成系数 K
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皮皮学刷刷变学霸
举一反三
【判断题】Nv Wa was the youngest daughter of Emperor Yan, a legendary ruler in ancient Chinese mythology.
A.
正确
B.
错误
【单选题】FueI oil discharged to the diesel engine cylinder is aomized at the___
A.
turbocharger
B.
injection nozzle tip
C.
caruretor
D.
fuel oil pump
【简答题】He 5. ______________ (marriage) his younger sister, Nv Wa,
【单选题】Nv Wa , the youngest daughter of ______, was said to transformed into a bird called Jingwei.
A.
Emperor Huang
B.
Quafu
C.
Pangu
D.
Emperor Yan