题目内容

冷却水机散热器电机转向对散热效果没有影响。

A. 正确
B. 错误

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试述针对我国现有国情,学习西方经济学的现实意义。

由于公约是提倡性的文书,所以公约用语应当分概括笼统。

A. 正确
B. 错误

With reference to an axial piston pump, which one of the following statements is true?()

A. The cylindrical barrel is coupled to the motor
B. The cylindrical barrel has an odd number of bores
C. The bores end in sockets
D. The sockets fit in the swash plate

降温系统一般是间歇式工作,喷雾10~30s,为便于雾粒气化,停止工作()

A. 4min
B. 3min
C. 2min
D. 1mi

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