更多"The cooling water temperature （） ov"的相关试题:
[单项选择]If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be （）
A. a dirty lube oil strainer
B. internal water leaks
C. an oil suction line restriction
D. excessive wears of the cooling water pump
[单项选择]The temperature at which water vapor in the atmosphere begins to condense is called the （）.
A. dew point temperature
B. condensation temperature
C. psychometric temperature
D. absolute humidity temperature
[单项选择]When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.
A. to cut down the amount of cooling water needed
B. to prevent an excess amount of cooling water from being discharged to the bilges
C. to supply hot water to the evaporator for more economical operation
D. None of the above is tree
[单项选择]When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.
A. to decrease scale formation
B. for better cooling effect
C. for more economical purpose
D. to raise vacuum
[单项选择]High diesel engine cooling water temperatures can be caused by （）.
A. a worn water pump
B. not enough coolant
C. air in the cooling system
D. all of the above
[单项选择]Those generally used additives for cooling water are either anti-corrosion oils or inorganic（）.
A. gases
B. paints
C. inhibitors
D. detergent
[单项选择]Lube oil accumulating in the cooling water system of a diesel engine will result in （）
A. lube cooler failure
B. poor heat transfer
C. mechanical lubricator failure
D. camshaft seizure
[单项选择]Cooling water pumps driven by direct reversing diesel engines are usually of the straight impeller vane type pump with a concentric housing to（）
A. facilitate bi-directional operation
B. provide the greatest pump efficiency
C. prevent pump clogging from marine growth
D. prevent cavitation at the pump outlet
[单项选择]Cavitation erosion in the cooling water system of a diesel engine usually occurs at the pump impeller, and on the waterside of the （）
A. fuel nozzle holders
B. exhaust value guides
C. engine cylinder liners
D. low temperature and a low viscosity
[单项选择]Cooling Water的中文含义是（）。
A. 冷却管
B. 冷却水套
C. 冷却水
D. 冷却油
[单项选择]Where is the cooling water from the compensating tank in the cooling water system of main engine lead to?（）
A. discharge side of the centrifugal pump
B. suction side of the centrifugal pump
C. the lowest point of the cooling water system
D. inlet of the main engine
[单项选择]Why the cooling water of the diesel engine should be treated? Because the（）
A. Cooling water is alkalescence
B. cooling water is acidity
C. cooling water has salinity
D. cooling water has impurity
[单项选择]
The purpose of treating the cooling water of the diesel engine is to（）
Ⅰ. resist the scale formation in the cooling chamber
Ⅱ.lubricate the engine part
Ⅲ.increase thermal capacity
Ⅳ.resist corrosion
A. Ⅰ+Ⅱ
B. Ⅱ+Ⅲ
C. Ⅲ+Ⅳ
D. Ⅰ+Ⅳ
[单项选择]If cooling water flow through the after-cooler is interrupted,the power output of a turbocharged diesel engine will drop because the （）
A. turbocharger will stall
B. density of the air charge will decrease
C. scavenge effect will increase
D. exhaust pressure will increase
[单项选择]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
[单项选择]The cooling water jacket is common to all the cylinders but there are often （） to ensure that each cylinder receives the right amount and flow of water.
A. dividing walls
B. divided walls
C. dividing liners
D. divided jackets
[单项选择]The cooling water is in direct contact with the outer surface of the liner as a result of which it is termed a （）.
A. water liner
B. wet liner
C. dry liner
D. drown liner
[单项选择]A diesel engine cooling water system with a pH factor of 30 indicates a condition of （）.
A. slight acidity
B. slight alkalinity
C. excessive alkalinity
D. excessive acidity
