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【单项选择题】

When two AC generators are being paralleled, the breaker should be closed with the synchroscope pointer mating in the ()

A、A."slow" direction, just before the 12 o'clock position

B、B."fast" direction, just after the 12 o'clock position

C、C."fast" direction, just before the 12 o'clock position

D、D."slow" direction, just after the 12 o'clock position

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