the circuit breaker
for leaks in the suction piping
relief valve is not properly seated
the suction strainer
第1题：
Which statement is TRUE concerning cargo hose on tank barges ________．
A.Cargo hose must be able to withstand the shut-off head plus the static head of the cargo pump
B.Cargo hose must be able to withstand the static head of the cargo pump but no less than 100 psi
C.Cargo hose must be able to withstand the shut-off head less the static head of the cargo pump but no less than 100 psi
D.Cargo hose must be able to withstand at least 150 psi
第2题：
to be not able to help
being unable to help
being not able to help
not be able to help
第3题：
A.developíng
B.have developed
C.to develop
第4题：
primarily to lubricate the shaft seals
due to the inability of this type of pump to lift water to cover the suction (eye) of the impeller
to initially unload the pump by having its head pressure equal to discharge pressure
in order to overcome the potential energy of water in the discharge line
第5题：
Open the bilge pump for inspection
Remove each of the manifold valves
Remove only the manifold valve to the affected bilge-well
Attempt to pump out another bilge well to determine if the entire system is affected
第6题：
the spelunking team was not able of exploring the full extent of
the full extent was not able to be explored by the spelunking team of
the spelunking team was unable in exploring, to its full extent,
therefore the spelunking team was unable to explore the full extent of
the spelunking team was unable to explore the full extent of
第7题：
must be fixed if the vessel exceeds 12 meters in length
may be used as a fire pump
must be portable if there are more than 4 watertight compartments
must be capable of pumping at least 450 gpm
第8题：
How to pump out bilge water in the engine room?
第9题：
turbine
screw
vane
ejector
第10题：
turbine
screw
vane
ejector