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單項選擇題

A device which prints out a permanent record of the plant operating conditions is known as the （）.

A.analogger
B.bell logger
C.alarm logger
D.data logger

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單項選擇題

Which of the following types of motors is often designed for use in correcting power factor?（）

A.Polyphase
B.Wound-rotor
C.Induction
D.Synchronous

單項選擇題

Power transformers are rated in （）.

A.kilowatts
B.ampere-turns
C.kilowatt-volts
D.kilovolt-amperes

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