A.more than 28 seconds
B.more than 60 seconds
C.less than 28 seconds
D.less than 60 seconds
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A.Sodium hydroxide
B.Sodium carbonate
C.Sodium nitrate
D.Sodium polyphosphate
A.expand
B.extract
C.increase
D.decrease
A.escapes
B.overheats
C.expands
D.accelerates
A.be interrupted
B.move downwards
C.move outwards
D.retain original position
A.Height of the machine
B.Temperature of the liquid seal
C.Gravity disc
D.Bowl diameter
A.Accidental discharge of oil
B.Disposal of oil residues
C.Quantity of water produced by FWG
D.Discharge of dirty ballast or cleaning water from fuel oil tanks
A.strangers
B.relief valves
C.emergency valves
D.strainers
A.proceeding
B.overloading
C.collision
D.flooding
A.every oil tanker
B.every ship of 400 tons gross tonnage and above
C.A and B
D.Neither A nor B
A.Non automatic discharge overboard of machinery space bilge water
B.Automatic discharge overboard of machinery space bilge water
C.A and B
D.Neither A nor B
最新试题
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by ().
If the suction pressure at the refrigeration compressor is below normal, the cause can be().
The major source of chemical contaminants in hydraulic fluid is ().
The rate of heat transfer from a hot region to a cold region is affected most by the ().
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump ().
When the steering gear is in operation, you should ().
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will ().
A salinity indicator is used to determine the ().
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by ().
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is ().