更多"Excessively warm water leaving cond"的相关试题:
[单项选择]Safe water buoys may show ONLY（）.
A. flashing red lights
B. flashing green lights
C. white lights
D. yellow lights
[单项选择]Water may boil up around the stern of a vessel in a channel due to（）.
A. slack water when upbound
B. shallow water
C. a cross current
D. a head current
[单项选择]Distilled water from an evaporator may be discharged into a potable water tank （）.
A. through a detachable hose connection
B. after passing through an activated charcoal filter
C. after chemical analysis shows it is fit for consumption
D. through a solenoid operated three-way valve
[单项选择]To keep injured survivors warm in the water after abandoning a ship，they should（）.
A. be placed in the middle of a small circle formed by the other survivors in the water
B. float on their backs with their arms extended for maximum exposure to the air
C. remove their life preservers and hold on to the uninjured survivors
D. sip seawater at intervals of fifteen minutes
[单项选择]A centrifugal pump may fail to deliver water when first started if the （）.
A. water seal pipe is plugged
B. pump is not primed
C. seal ring is improperly located
D. impeller is flooded
[单项选择]A virtual rise in the center of gravitty may be caused by（）.
A. filling a partially tank
B. using an on board crane to life a freely swinging heavy object
C. emptying a partially filled tank
D. transferring ballast from the forepeak to the after peak
[单项选择]Seawater may be used for drinking water （）.
A. at a maximum rate of two ounces per day
B. after mixing with an equal quantity of fresh water
C. if gather during or immediately after a hard rain
D. under no circumstance
[单项选择]You may find the time of slack water after low water in a certain port from（）.
A. Deadweight Scale
B. Tide Tables
C. Notices to Mariners
D. Table of Azimuth
[单项选择]Water fog from an all-purpose nozzle may be used to（）.
A. fight an electrical fire
B. fight a magnesium fire
C. eliminate smoke from a compartment
D. All of the above
[单项选择]When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.
A. to cut down the amount of cooling water needed
B. to prevent an excess amount of cooling water from being discharged to the bilges
C. to supply hot water to the evaporator for more economical operation
D. None of the above is tree
[单项选择]When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.
A. to decrease scale formation
B. for better cooling effect
C. for more economical purpose
D. to raise vacuum
[单项选择]A water pump can not supply water after startingIt may be caused by （）.
A. closed discharge valve
B. broken pipe line
C. worn shaft
D. both A and B
[单项选择]After stopping oily water separator, sea water should be permitted for （） minutes,（）should be closed after stopping pump to reduce oxidation corrosion of inner wall.
A. 15；inlet value
B. 15；inlet and outlet value
C. 30；inlet value
D. 30；inlet and outlet value
[单项选择]The water level showing in a boiler water gauge glass is usually （） during working.
A. higher than the actual drum water level
B. equal to the actual drum water level
C. increasing due to steam condensation in the glass
D. lower than actual drum water level
[单项选择]The fresh water generator produces fresh water （）.
A. by cooling sea water
B. by heating sea water
C. by evaporation of sea water
D. by purifying sea water
[单项选择]（） water is more expensive than fresh water It has high specific heat and low viscosity.
A. Distilled
B. Distilling
C. Boiling
D. Boiled
[单项选择]The oil （） in the discharging water from oil water separator exceeds 15 PPM without alarm, because the coil was burnt out.
A. filter
B. hole
C. pollution
D. content
[单项选择]（） is the production of pure water from sea water by evaporation and re-condensing.
A. Evaporation
B. Circulation
C. Condensation
D. Distillation
[单项选择]We use （） to distill fresh water from sea water.
A. engine
B. sea water pump
C. cylinder cooler
D. fresh water generator
