更多"Before loading bulk grain，bilge wel"的相关试题:
[单项选择]Before loading bulk grain, bilge wells must be covered to（）.
A. add strength to the bilge well strainer
B. permit rapid flow of water to the bilge wells
C. prevent cargo sifting into the bilge wells
D. preven oil, water , or other liquid from reaching the cargo
[单项选择]All bilge suctions must be fitted with suitable （）, which in the machinery space would be mud boxes positioned at floor plate level for easy access.
A. strangers
B. relief valves
C. emergency valves
D. strainers
[单项选择]All bilge suction must be fitted with suitable （）, which in the machinery space would be mud boxes positioned at floor-plate level for easy access.
A. strainers
B. valves
C. elements
D. separators
[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]Bags are usually stowed in between the bulk grain（）.
A. to ventilate the hold
B. to separate the cargo
C. to replace shifting boards
D. to facilitate stowage
[单项选择]All the holds to be loaded with grain must be swept（）commencement of loading.
A. Cleanly/during
B. Clear/meanwhile
C. Clean/between
D. Clean/prior to
[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]Before any loading takes place any signs of the previous cargo should do（）.
A. kept
B. removed
C. replaced
D. recycled
[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
