海船船员考试
单选题CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.A the discharge valve is openB the control box glass is brokenC pressure from the control cylinders is detectedD the control cylinders have been completel
题目
the discharge valve is open
the control box glass is broken
pressure from the control cylinders is detected
the control cylinders have been completely discharged
相似问题和答案
第1题：
The pressure of a liquid leaving the pump can be referred to as the ______.
A.total head
B.discharge head
C.net positive suction head
D.suction head
第2题：
What is the purpose of pressure-vacuum relief valves ________．
A.Regulation of discharge pressure from cargo pumps
B.Maintaining constant velocity in cargo lines
C.Regulation of suction head on cargo pumps
D.To maintain a tank or void at atmospheric pressure
第3题：
Which of the following terms is used to identify the pressure of the liquid entering a pump?
A.Suction head
B.Pump head
C.Discharge head
D.Total head
第4题：
gate valve
pressure gauge
check valve
strainer
第5题：
an electric system manager
a sensing bulb at the tail coil of the evaporator
pressure changes in the suction line
failure of the king solenoid valve
第6题：
The refrigeration system low pressure cutout switch is actuated by______.
A.an electric system manager
B.a sensing bulb at the tail coil of the evaporator
C.pressure changes in the suction line
D.failure of the king solenoid valve
第7题：
gear
vane
screw
centrifugal
第8题：
With reference to a two-ram actuating mechanism, which one of the following statement is FALSE?
A.The rams work inside cylinders.
B.The cylinders have glands sealing their open ends.
C.The rams are connected to a cross-head
D.The cross-head is mounted on the rudder stock
第9题：
Regulation of discharge pressure from cargo pumps
Maintaining constant velocity in cargo lines
Regulation of suction head on cargo pumps
To maintain a tank or void at atmospheric pressure
第10题：
there are fifteen pounds of CO2 in the container
the container，when full，weighs fifteen pounds
the pressure at the discharge nozzle is l5 psi
the empty container weighs fifteen pounds