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单选题
If you do not do a regular monitoring of the APU oil consumption, do the steps that follow to make sure that the APU oil quantity is sufficient for the flight.
A
如果你没有对APU滑油量进行常规监控，请执行以下步骤以确保APU滑油量足以用于飞行。
B
如果你没有定期监控APU滑油消耗量，请执行以下步骤以确保APU滑油量足以用于飞行。
C
如果你没有对APU滑油剩余量进行常规监控，请执行以下步骤以确保APU滑油量足以用于飞行。
答案解析
正确答案：B
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