更多"Bilge keels are more effective at c"的相关试题:
[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]Bilge keels are fitted on ship to（）.
A. assist in drydock alignment
B. improve the vessel's stability
C. protect the vessel from slamming against piers
D. reduce the rolling of the vessel
[单项选择]Bilge keels are fitted on ships to（）.
A. assist in drydock alignment
B. improve the vessel's stability
C. protect the vessel from slamming against piers
D. reduce the rolling of the vessel
[单项选择]A bilge suction line，in a fishing vessel with more than 16 individuals aboard，must have a strainer with an open area not less than how many times the open area of the suction line?（）
A. one
B. two
C. three
D. four
[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]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]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]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]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
[单项选择]The bilge system has been performing well; however, the aft starboard engine room bilgewell suddenly fails to be pumped outWhich of the following should be done first to determine the cause?（）
A. Open the bilge pump for inspection
B. Remove each of the manifold valves
C. Remove only the manifold valve to the affected bilge-well
D. Attempt to pump out another bilge well to determine if the entire system is affected
[单项选择]The bilge main is arranged to drain any watertight compartment （） ballast, oil or water tanks and to discharge the contents overboard.
A. rather than
B. other than
C. in addition that
D. except for
[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]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]A 15-ton bulldozer employed caused the bilge limber boards on both sides（）.
A. serious damaged
B. seriously damage
C. serious damage
D. seriously damaged
[单项选择]An independent bilge suction is required for （）.
A. ballast tanks
B. sludge tanks
C. machinery space bilges
D. cargo hold bilges
[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]If one of the bilge system manifold valves does not properly seat, the （）
A. bilge well connected to that valve, plus the second bilge well being pumped will be completely emptied
B. bilge system will lose vacuum and prevent the other bilges from being pumped out
C. bilge well aft connected to that valve will siphon its contents to the forward bilge wells
D. discharge pressure will be too high
