海船船员考试
单选题The emergency bilge suction valve is typically used （）.A to inject cleaning additives when the bilges are extremely dirtyB when the main condenser becomes fouled, in order to provide additional cooling water circulationC to connect the rose box to the
题目
to inject cleaning additives when the bilges are extremely dirty
when the main condenser becomes fouled, in order to provide additional cooling water circulation
to connect the rose box to the independent bilge suction
if the bilges become flooded and they can not be emptied by any other means
相似问题和答案
第1题：
If the suction pressure for an operating refrigeration compressor is below normal, the cause may be ______.
A.an excess of liquid refrigerant
B.the expansion valve overfeeding
C.a fouled compressor suction strainer
D.the compressor short cycling
第2题：
The fitting at the end of a cargo line in a tank that allows suction to be taken close to the bottom of a tank is a ______．
A.Suction end
B.Strainer
C.Bell-mouth
D.Vacuum valve
第3题：
Accidental flooding of the engine room bilges by the bilge main is prevented by( ).
A.stop-check valves installed in the bilge suction manifolds
B.using a positive displacement reciprocating bilge pump
C.installing educators in all bilge rose boxes
D.installing a swing check before each bilge valve
解析：bilge main:舱底水总管;stop-check valves：截止止回阀
译文：在舱底水吸入总管设立截止止回阀可以防止由舱底水总管引起的舱底水泛滥。
第4题：
motor overload would open
relief valve would open
pump would eventually overheat
motor would overheat
第5题：
the direct acting relief valve is used for controlling lower flows and pressure
the pilot operated relief valve is used for controlling higher flows and pressure
the pilot operated relief valve is used for controlling lower flows and pressure
the controlling accuracy of direct acting relief valve is worse than that of the pilot operated relief valve
第6题：
Before discharge of cargo tank ballast is undertaken，______．
A.the deck isolating valve is open
B.flue gas isolating valve
C.blower suction valve
D.blower discharge valve
第7题：
What is the purpose of the relief valve of a cargo pump ________．
A.Provides for the removal of vapors
B.Allows two or more tanks to be filled at the same time
C.Provides for the emergency shutdown of the pump
D.Permits the return of cargo to the suction side of the pump
第8题：
To add refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the_______ .
A.suction service valve as a vapor
B.suction service valve as a liquid
C.discharge service valve as a vapor
D.charging valve as a liquid
第9题：
dependent
in dependent
in series
in parallel
第10题：
turbine
screw
vane
ejector