A.trick wheel
B.accumulator
C.standby pump
D.telemotor
您可能感興趣的試卷
你可能感興趣的試題
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
A.too much refrigerant in the system
B.oil entrained in the refrigerant
C.less than a full charge of refrigerant in the system
D.ice crystals forming in the refrigerant
A.with both pumps on line at the same time
B.with one pump on standby
C.with the follow-up gear disconnected
D.only when the rudder is moved amidships
A.high temperature distillate can be re- circulated to induce additional flashing
B.scale formation is not a severe problem
C.cold shocking is more effective in removing scale
D.water purity is greatly increased at high capacity
A.high pressure liquid line
B.low pressure liquid line
C.high pressure vapor line
D.low pressure vapor line
最新試題
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）