When a sudden increase in steam demand occurs from the boiler, the water level in the drum at the higher pressure will（）<br>A:rise quickly<br>B:rise slowly<br>C:drop quickly<br>D:drop slowly

When a sudden increase in steam demand occurs from the boiler, the water level in the drum at the higher pressure will（）
A:rise quickly
B:rise slowly
C:drop quickly
D:drop slowly

出自：海船船员证

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