单项选择题
When a sudden increase in steam demand comes to normal, the drum pressure will and water level in the drum will（）.
A.rise, rise also
B.rise, drop
C.drop, rise
D.drop, drop also
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A.excessive internal leakage in the pump
B.low discharge pressure and fluid flow
C.excessive fluid level in the hydraulic reservoir
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A.need to repair
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A.to repair
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