海船船员考试
单选题In a central cooling system, used in some modem ships, sea water is supplied to cool （）which will circulate to other individual cooler, greatly reducing the corrosion problems.A fresh waterB sea waterC cooling oilD emulsion
题目
fresh water
sea water
cooling oil
emulsion
参考答案和解析
相似问题和答案
第1题：
According to the international regulations concerning the prevention of pollution of sea areas from ships, the disposal into the sea of all plastics is______.
A.welcome
B.admitted in some special sea areas
C.prohibited
D.acceptable
第2题：
Which of the following is TRUE about the ate program？（）
- A、When running ate for the first time it will prompt for all the required information and configure all the required devices
- B、The program is used by cu to communicate to a remote system
- C、The program is used for remote communications between the host and a remote system using a modem or null modem via a tty port
- D、The program ate calls cu to communicate with the remote system
正确答案:C
第3题：
What is head tank in the closed cooling water system used for?
A.for the release of air from the cooling water
B.providing expansion room for heated cooling water
C.a place for implementing water and water treatment agent
D.all of the above
第4题：
Baffle plates that have been bent during prior removal
Leaks in the cooler tube nest
Operating the engine while maintaining a high sea water outlet temperature
A punctured sea water strainer supplying cooling water to the heat exchanger
第5题：
strength
dense
percentage
velocity
第6题：
Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?
A.Baffle plates that have been bent during prior removal
B.Leaks m the cooler tube nest
C.Operating the engine while maintaining a high sea water outlet temperature
D.A punctured sea water strainer supplying cooling water to the heat exchanger
第7题：
Which of the following accurately describes the meaning of redundant cooling？（）
- A、The source of cooling to a RAID system
- B、The cooling system in a redundant power supply
- C、A cooling system that can be installed in case of failure
- D、A second cooling system in case of a failure
正确答案:D
第8题：
In a diesel engine closed freshwater cooling system, the amount of coolant flowing through the heat exchanger is controlled by the __.
A.suction pressure regulator
B.thermostatic bypass valve
C.sea water temperature
D.water level in the expansion tank
第9题：
for the release of air from the cooling water
providing expansion room for heated cooling water
a place for implementing water and water treatment agent
all of the above
第10题：
An open vent in the cooling system
A fouled sea chest
A restricted water passage in the engine
Air entrained in the cooling water