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单选题
This task puts the airplane back to its usual condition after operation with the air control valve on the variable frequency starter generator (VFSG) air/oil heat exchanger inoperative.
A
该任务通过调节变频起动机发电机空气/油热交换器上的空气控制活门不工作状态使飞机恢复到正常状态。
B
在变频起动机发电机空气/油热交换器上的空气控制活门不工作的情况下，该任务在操作后使飞机恢复到正常状态。
C
该任务使变频起动机发电机空气/油热交换器上的空气控制活门失效状态恢复，从而使飞机恢复到操作后的通常状态。
答案解析
正确答案：B
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