单项选择题
A.that B.when C.if D.whether
When a sudden increase in steam demand comes to normal,...
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
If a hydraulic pump is overheating, the cause may be （）...
单项选择题If a hydraulic pump is overheating, the cause may be （）.
A.excessive internal leakage in the pump B.low discharge pressure and fluid flow C.excessive fluid level in the hydraulic reservoir D.operation of the pump at 100% efficiency
The motor for the fresh water pump （）.A.need to repairB...
单项选择题The motor for the fresh water pump （）.
A.need to repair B.need to be repaired C.needs to repair D.needs repairing
