海船船员考试
单选题Which of the following centrifugal pump components converts the liquid kinetic energy of velocity to the potential energy of pressure?（）A ImpellerB Electric motorC VoluteD Eye
题目
Impeller
Electric motor
Volute
Eye
相似问题和答案
第1题：
Which of the following components provides a direct source of seawater for the fire main system?
A.Rose box
B.Sea chest
C.Sluice(闸式) valve
D.Fire pump stuffing box
第2题：
All of the following steps are taken in starting a centrifugal pump，EXCEPT to ______．
A.Set the relief valve
B.Check the lubrication system
C.Vent the pump casing
D.Open the pump suction and discharge valves
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：
Oil is discharged from the impeller through the outlet
Gravity causes the oil to flow toward the discharge
The self-priming feature of the centrifugal pump enables it to draw its own suction as it starts
The discharge capacity varies directly with the speed of the impeller
第5题：
Which of the following components is found in a display panel assembly?（）
- A、Inverter
- B、DC converter
- C、DVI adapter
- D、Video memory
正确答案:A
第6题：
If it becomes necessary to pump bilges while a vessel is in port, which of the following procedures should be followed?
A.Pump only if the discharge is led to a shore tank or barge
B.Pump only during the hours of darkness
C.Pump only on the outgoing tide
D.Pump only as much as is necessary
第7题：
Which pump must always be primed ________．
A.Centrifugal pump
B.Reciprocating pump
C.Rotary pump
D.All of the above
第8题：
Throttling in the _____ line of a centrifugal pump involves the risk of the pump cavitation.
A.suction
B.exhaust
C.pressure
D.discharge
第9题：
Single stage or multistage
High pressure or low pressure
Open or close coupled
Horizontal or vertical
第10题：
Ethernet LAN card
Motherboard
Hard disk
RAM