单选题

If the left CMC fails, automatic switching occurs so that the right CMC provides the outputs.

A如果左CMC故障，会自动转换使右CMC提供输出。

B如果左CMC失效，会自动打开电门，由右CMC提供输出。

C如果左CMC掉落，自动电门会使右CMC提供输出。

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正确答案：A （备注：此答案有误）

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