单选题

THE SUPPLY PRIORITIES FOR AC BUS 1(2) ARE:

AExternal Power, then the APU Generator, then the onside IDG, then the opposite IDG.

BThe onside IDG, then the opposite IDG and then External Power and the APU Generator.

CThe onside IDG, then the APU Generator, then External Power and then the opposite IDG.

DThe onside IDG, then External Power, then the APU Generator and then the opposite IDG.

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正确答案：A （备注：此答案有误）

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