A.The blow down valve
B.The scum valve
C.The air release cock
D.The soot-blower
您可能感興趣的試卷
你可能感興趣的試題
A.an diesel oil heater
B.a waste heat boiler
C.a fresh water generator
D.all the above
A.safety valve
B.blow down valve
C.scum valve
D.feed check valve
A.descriptions
B.discrepancies
C.different
D.deflections
A.completed
B.carried out
C.cleaned
D.steamed
A.one to supply steam to the main propulsion turbine
B.an auxiliary boiler
C.A and B
D.neither A nor B
最新試題
A salinity indicator is used to determine the （）.
If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.
Thermostatic expansion valves can be adjusted for （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.
The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?（）
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）