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三相异步电动机定子回路串接不同电阻的人为机械特性都通过固有特性的同步转速点。()

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What type of publication is Mr. Brooks expected to work on?

A. Fashion.
B. Education.
C. Finance.
D. Entertainment.

电动机采用星-三角减压起动,起动转矩降低到直接起动的1/2。()

一般他励直流电动机在额定励磁状态时,磁路已接近饱和。()

What are the people with infected ears advised to do?

A. Use earplugs.
B. Eat a hard sweet.
C. Travel another day.
D. Ask for help from cabin crews.

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