单项选择题

A few spots of turbocharger can be caused by（）
①crash stop of engine
② rapid increased of engine speed

A.①only is correct
B.②only is correct
C.both ① and ②are correct
D.neither ① or ② correct

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The function of synchronous compensating machine is to（）

A.improve power factor
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What is head tank in the closed cooling water system used for?（）

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单项选择题

According to the principle of four stroke diesel engine, what is the number of its efficient work stroke per revolution?（）

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B.1
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A few spots of turbocharger can be caused by（） ①crash stop of engine ② rapid increased of engine speed

相关考题

A few spots of turbocharger can be caused by（）
①crash stop of engine
② rapid increased of engine speed