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单选题
The reciprocating pump can’t draw water from a tank may be caused by （）.
A
leaky pipe
B
opened inlet valve
C
too much water in tank
D
None of the above
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单选题The outlet from an expansion tank of a closed freshwater cooling system should be piped to the （）.A
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Bilge waterC
Oil transferD
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after passing through an activated charcoal filterC
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lube oil pump overflow
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单选题The amount of fluid delivered by a reciprocating pump can be regulated by （）.A
throttling the pressure lineB
changing the speed of the pistonC
either A or BD
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单选题Water accumulation in the cylinder of a secured engine is an indication that the （）A
soft water pump was not secured along with the engineB
jacket water thermostat has failedC
cylinder liner may be crackedD
raw water pump is over-speeding just prior to engine shutdown
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expansion tank atmospheric vent
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priming waterB
power supplyC
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单选题Which of the following liquids can ordinarily be discharged overboard without being processed through an oily water separator?（）A
Cargo tank ballastB
Segregated ballastC
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Cargo pump room bilges
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