单选题When a sudden increase in steam demand comes to normal, the drum pressure will and water level in the drum will（）.Arise, rise alsoBrise, dropCdrop, riseDdrop, drop also
单选题
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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