A、injector
B、positive displacement
C、centrifugal
D、centripetal
更多“A （） pump is that where the volume of the pump chamber is alternately increased to draw the liquid in and then decreased to force the liquid out.”相关的问题
A、centrifugal pump is cheaper than reciprocating pump B、the size of centrifugal pump with same capacity is smaller than that of reciprocating pump C、centrifugal pump makes maintenance easier than reciprocating pump does D、all of the above
A、maintaining a steadier speed B、delivering liquids over greater distances C、operating for longer periods of time D、producing a smoother discharge flow
A、the forced ventilating system is operating B、the cargo pumps are secured C、no monocarbon gases are present D、the oily water separator is de-energized
A、discharge is continuous B、it has no internal valves C、upon accidental closing of discharge valve, excessive pressure will not build up D、all of the above are true
A、draw the liquid in；force the liquid out B、force the liquid out；draw the liquid in C、suction；draw D、deliver；outlet
A、The valve on an empty portable tank that contained acetone is accidently opened and some of the residue escapes to the open sea B、A carboy of nitric acid is broken on deck while loading and is flushed overboard with no injuryor damage C、Part of your deck cargo of five gallon cans of paint is damaged and leaking so you jettison them to eliminate the fire hazard D、Heavy weather causes damage to packages of a hazardous liquid that is subsequently pumped out at sea through the bilge pumping system
A、the lack of cooling effect on heated materials B、that it cannot be used in a dead ship situation with no electrical power to the CO2 pump C、that it breaks down under extreme heat to form poisonous gases D、there is no effect on a class A fire even in an enclosed space
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