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The water level in the gauge glass when a boiler is operating is （） when the boiler is shut down.
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The water level in the gauge glass when a boiler is operating is （） when the boiler is shut down.
A、lower than
B、higher than
C、below
D、equal to
时间：2022-01-02 14:06
关键词：
船舶辅助机械
答案解析
B
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