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发布时间:2023-12-31 19:09:10

[单项选择]When installed for bilge pumping or ballast duty, centrifugal pumps require a () to remove air from the suction pipe.
A. air chamber
B. head lank
C. primer
D. prime mover

更多"When installed for bilge pumping or"的相关试题:

[单项选择]When discharging bilge water, which criteria must be observed?()
A. The requirement for the oil content of bilge water discharged is 15 ppm
B. No discharge in sensitive waters
C. Any discharge in sensitive waters
D. International, national or local requirements have to be observed
[单项选择]When bilge water is heated in a holding tank, which one of the following statements is not accurate?()
A. The high temperature facilitates primary gravity separation
B. Most of the oil and organic solvents are raised to the top layer
C. The high the temperature is, the more the top oil will be collected
D. The high temperature has little use on the separation of emulsified oil
[单项选择]When fighting an oil or gasoline fire in the bilge,which of the following should NOT be used?()
A. Foam
B. Solid stream water nozzle
C. All-purpose nozzle
D. Carbon dioxide
[单项选择]When oily ballast has been pumped overboard,an entry must be made in the().
A. Oil Record Book
B. Official Logbook
C. deck rough log
D. engine rough log
[单项选择]When()clean ballast water from any vessel,an application shall be made to Harbor Authorities for approval.
A. discharging
B. recircling
C. loading
D. taking in
[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 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]When stand-by before sailing, the duty engineer and officer should check clock, engine telegraph and rudder, and then write it in the ()
A. engine room logbook
B. voyage logbook
C. engine room logbook or voyage logbook
D. engine room logbook and voyage logbook
[单项选择]The third officer’s duty is to()when vessel is commanded under the pilot or captain.
A. operate the wheel and stand by
B. keep a lookout and operate steering gear
C. enter telegraph orders in the bell book
D. operate the telegraph and enter telegraph orders in the bell book
[单项选择]The Third Officer’s duty is to()when vessel is commanded under the pilot or Captain.
A. Operate the wheel and stand by
B. Keep a lookout and operate steering gear
C. Enter telegraph orders in the bell book
D. Operate the telegraph and enter telegraph orders in the bell book
[单项选择]Bilge soundings indicate().
A. the amount of condensation in the hold
B. whether the cargo is leaking or not
C. whether the vessel is taking on water
D. All of the above
[单项选择]Bilge keels are more effective at clampening rolls as the().
A. pitching increases
B. list increases
C. rolling increases
D. dreft increases
[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]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]Bilge keels are more effective at dampening rolls as the().
A. pitching increases
B. list increases
C. rolling increases
D. draft decreases
[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]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]According to the SOLAS convention, the bilge water system ()
A. must connect the bilge well suction directly
B. should not pump out the water accumulated in the cargos
C. should not used for emergency drainage in case of ship collision
D. should connect to the fire fighting system directly

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