更多"The （）pump is usually used as the e"的相关试题:
[单项选择]The （）pump is usually used as the bilge feed pump to an oily water separator.
A. turbine
B. screw
C. vane
D. ejector
[单项选择]The emergency bilge suction or bilge （） is used to prevent flooding of the ship.
A. injection valve
B. relief valve
C. discharge valve
D. inlet filter
[单项选择]If a centrifugal bilge pump were continually operated with the discharge valve closed the （）.
A. motor overload would open
B. relief valve would open
C. pump would eventually overheat
D. motor would overheat
[单项选择]A centrifugal bilge pump requires priming （）.
A. primarily to lubricate the shaft seals
B. due to the inability of this type of pump to lift water to cover the suction (eye) of the impeller
C. to initially unload the pump by having its head pressure equal to discharge pressure
D. in order to overcome the potential energy of water in the discharge line
[单项选择]If an operating bilge pump is developing good vacuum, but is unable to discharge any water, which of the following problems is the most probable cause?（）
A. The wearing rings are excessively worn
B. The suction strainer is clogged
C. The discharge valve is clogged
D. The shaft is worn
[单项选择]The bilge pump on a fishing vessel（）.
A. must be fixed if the vessel exceeds 12 meters in length
B. may be used as a fire pump
C. must be portable if there are more than 4 watertight compartments
D. must be capable of pumping at least 450 gpm
[单项选择]If a bilge pump failed to build up discharge pressure, you should check for （）.
A. excessive water in the bilges
B. a clogged suction strainer
C. oil in the bilges
D. All of the above
[单项选择]If a bilge pump is able to develop vacuum, but is unable to sufficiently pump out the bilges, you would check for all of the following EXCEPT （）.
A. the circuit breaker
B. for leaks in the suction piping
C. relief valve is not properly seated
D. the suction strainer
[单项选择]If an emergency pump control is used as the emergency shutdown on a tank vessel，it must（）.
A. stop the flow of oil at the main deck manifold
B. prevent the oil from leaving the shore facility
C. prevent the oil from siphoning through the pump
D. None of the above
[单项选择]The emergency bilge suction or bilge injection valve is used to prevent （） of the ship.
A. proceeding
B. overloading
C. collision
D. flooding
[单项选择]The pump used to send the bilge water into the oily water separator（）the mixture because this might create finer oil particles.
A. should agitate
B. should not agitate
C. should mix up
D. should not add up
[单项选择]The emergency bilge suction valve is typically used （）.
A. to inject cleaning additives when the bilges are extremely dirty
B. when the main condenser becomes fouled, in order to provide additional cooling water circulation
C. to connect the rose box to the independent bilge suction
D. if the bilges become flooded and they can not be emptied by any other means
[单项选择]An emergency bilge pumping system is provided and should be （） of the main bilge pumping system, according to the SOLAS 74 Convention.
A. dependent
B. in dependent
C. in series
D. in parallel
[单项选择]The （）pump is usually used as the lubricating oil pump.
A. turbine
B. screw
C. vaneejector
D. centrifugal
[单项选择]The lube oil pump used in a diesel engine is a （）.
A. volute pump
B. centrifugal pump
C. diaphragm pump
D. gear pump
[单项选择]A heavy，thick-walled tube，usually steel，used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a（）.
A. heavy-walled drill pipe
B. tool joint
C. down hole tool
D. drill collar
[单项选择]An axial piston, variable stroke pump is used in a vessels hydraulic steering gearUnder pressure, oil continually leaks out from between the valve plate/cylinder barrel and will（）.
A. cause loss of hydraulic oil from the system
B. result in extreme damage to the pump
C. cause damage to the pump ff not continually drained from the pump casing
D. result in the system high side pressure to substantially drop off
[单项选择]Usually, emergency electricity supplies to on board（）
A. Cargo winch
B. Windlass
C. Steering gear
D. Main air compressor
