题目内容
（请给出正确答案）
Cargo pump relief valves are piped to the ______．
A.cargo pump pressure gauges
B.crossover lines interconnecting two pumps
C.suction side of pumps
D.atmosphere through pump vents
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更多“Cargo pump relief valves are piped to the ______．A.cargo pump pressure gaugesB.crossover l”相关的问题
What is the purpose of the relief valve of a cargo pump ________．
A.Provides for the removal of vapors
B.Allows two or more tanks to be filled at the same time
C.Provides for the emergency shutdown of the pump
D.Permits the return of cargo to the suction side of the pump
A.a low load on the unit
B.a clogged pump suction strainer
C.a blockage in the line between the pump and hydraulic motor
D.the hydraulic motor turning too fast
The usual symptoms of cavitation in a centrifugal pump is _____.
A.noise and vibration
B.an increase in discharge pressure
C.an increase in suction pressure
D.lifting of the relief valve
The author implies that ______.
A．individuals on relief do not receive enough money to meet basic needs
B．only unemployed people are benefited by the measures discussed in this passage
C．those who get direct financial aid from the government suffer a loss of human dignity
D．program of "pump priming" is vital at all times
The author implies that______
A．individuals on relief do not receive enough money to meet basic needs
B．those who get direct financial aid from the government suffer a loss of human dignity
C．aid should be given in the form. of food subsidies
D．a program of "pump priming" is vital at all times
Prior to entering a cargo pump room, you should ensure that _____.
A.the forced ventilating system is operating
B.the cargo pumps are secured
C.no monocarbon gases are present
D.the oily water separator is de-energized
To operate a centrifugal fire pump at reduced capacity, you should _____.
A.readjust the relief valve
B.throttle the suction line
C.throttle the discharge valve
D.open the priming line
A.the cylinder cover is cracked
B.the injector holes is clogged
C.the cams are not properly set
D.fuel pump is leaking
In a full flow type lube oil system, the bypass relief valve will lift due to .
A.a clogged filter element
B.excessive lube oil pump discharge pressure
C.excessive lube oil flow
D.excessively hot lube oil
A fire pump may be used for other purposes if ______.
A.the other services are run off a reducing station with a pressure gage
B.one of the required pumps is kept available for use on the fire main system at all times
C.no relief valves are installed
D.all of the above conditions are met
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