更多"During the diesel engine running, t"的相关试题:
[单项选择]During the diesel engine running, the water level of FW expansion tank should normally kept in the （） level of glass tube.
A. the highest
B. above 3/4
C. 1/2-3/4
D. the lowest
[单项选择]During the running of the diesel engine, if the supply of cooling water is interrupted or the temperature of cooling water out of the cylinder is too high, the duty engineer should （）
A. notify the duty officer, reduce the engine speed, take some measures to remove failures
B. notify the duty officer and stop the engine immediately, find the cause and remove failures
C. notify the C/E
D. notify the captain
[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]The main propulsion diesel engine jacket water temperature rises above normal, with the raw water sea suction and the expansion tank water level being normalWhich of the following problems is most likely the cause?（）
A. Faulty thermostatic bypass valve
B. Eroded zinc pencils in the heat exchanger
C. Steam formation in the expansion tank
D. Excessive leakage from jacket water pump seal
[单项选择]Diesel engine jacket water is used in the distillation process as the （）.
A. coolant for the distillate
B. coolant for the brine cooler
C. means of heating the feedwater
D. primary means of producing a vacuum within the distiller
[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
[单项选择]In a diesel engine jacket water cooler, with seawater cooling the fresh water, the（）
A. sea water temperature must never be warmer than 40℃
B. jacket water pressure should always be greater than the sea water pressure
C. jacket water temperature must always be less than 60℃
D. jacket water pressure must always be less than the sea water pressure
[单项选择]In （）, hot diesel engine jacket water passes over the stack and heats the sea water passing through the tubes.
A. a flash generator
B. a flash evaporator
C. a vacuum boiling evaporator
D. a boiler
[单项选择]In a diesel engine cooling water system, a pH of 60 indicates a/an （）.
A. slightly acidic condition
B. slightly alkaline condition
C. overtreatment of water
D. neutral condition of water
[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 jacket water temperature in a diesel engine closed freshwater cooling system is normally controlled by （）
A. regulating the level of corrosion inhibitor in the primary cooling system
B. the level of the freshwater expansion tank
C. varying the engine load to meet temperature requirements
D. the operation of the thermostatic valve
[单项选择]A diesel engine fails to start because of water in the fuelIn order to start the engine, you should （）?
A. turn engine with jacking gear
B. drain filters and strainers and bleed off water at each injection pump
C. use ether to start the engine with blow-down valves open
D. blow through the cylinders and fuel lines with a drying agent
[单项选择]The cooling water of the diesel engine should be treated, because it has（）
A. alkale scence
B. acidity
C. salinity
D. impurity
[单项选择]The pH value of water in a diesel engine closed cooling water system should be maintained between （）.
A. 60 to75
B. 80 to 95
C. 100 to 115
D. 120 to 135
[单项选择]Engine coolant accumulating in the diesel engine lubricating oil can result from a （）
A. low oil pressure
B. high coolant pressure
C. leaking fuel injector
D. cracked cylinder head or liner
[单项选择]Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.
A. open the bypass line
B. cut in the lube oil cooler
C. pressurize the lube oil system
D. top off the expansion tank
[单项选择]The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.
A. principle
B. principal
C. cause
D. case
[单项选择]A diesel engine is similar to a gasoline engine except that the former has no （）.
A. cross-head
B. cylinder
C. connecting rod
D. spark plug
