更多"There is a （） system lubricating th"的相关试题:
[单项选择]The lubricating system for the cylinder walls is different from the bearings in that the oil for former one is supplied in （） while that for latter one is （）.
A. sufficient quantity； measured
B. measured quantity；sufficient
C. excessive quantity；sufficient
D. the less quantity the better；the more the better
[单项选择]Excessive lubricating oil consumption in a running diesel engine can be caused by （）
A. clogged lube oil piping
B. excessive valve-guide clearance
C. high lube oil viscosity
D. low lube oil temperature
[单项选择]In engines with system, the lubricating oil can be added to the engine through the filling hole in the crankcase cover, by using a hand oil can, or through the separator pipe（）
A. lubricating oil
B. dry sump
C. circulated tank
D. wet sump
[单项选择]In an electro-hydraulic steering gear system, when will the variable displacement pump be placed on stroke?（）
A. When the helm is at any angle other than amidships
B. When the six-way valve is opened
C. When the ram relief valves lift
D. When the redder angle is different from the position of the helm
[单项选择]The （） in the steering gear system provides the force.
A. control equipment
B. power unit
C. transmission mechanisms
D. fittings and pipeline
[单项选择]Excessive circulation of the lubricating oil with the refrigerant in a refrigeration system will cause （）.
A. carbon deposits on the compressor suction valves
B. the evaporator temperature to increase
C. rapid corrosion of the thermal expansion valve
D. no operating problems
[单项选择]Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?（）
A. Splash
B. Gravity
C. Pressure
D. Bypass
[单项选择]The oil lubricating diesel engine cylinders usually contain additives formulated to impart a high degree of alkalinity to （） the acid conditions.
A. invade
B. provide
C. detergent
D. neutralize
[单项选择]Lubricating systems for diesel engines are usually designed to initially provide lube oil to the engine （）
A. camshaft beatings
B. main bearings
C. piston crowns
D. cylinder walls
[单项选择]One characteristic of a lubricating oil adversely affecting the result of centrifuging is （）
A. high TBN value
B. low oil floc point
C. low oil demulsibility
D. low oil neutralization number
[单项选择]The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the（）
A. American Petroleum
B. Institute number viscosity index number
C. Seconds Saybolt Furol number
D. Seconds Saybolt Universal number
[单项选择]For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an （）.
A. oil spray
B. oil bath
C. oil control rings
D. drilled passage through the camshaft
[单项选择]Lubricating oil viscosity in an operating diesel engine can be reduced by（）
A. increasing cooling water flow
B. increasing lube oil flow
C. dilution by fuel oil
D. adding SAE 70 oil
[单项选择]The remaining oil in the lubricating pipes and ducts should be blown out with （）.
A. atmosphere
B. the fresh water
C. compressed air
D. chemical compounds
[单项选择]Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an （）.
A. overspeed trip
B. audible/visual alarm
C. the ships/boats general alarm
D. reserve oil storage tank
[单项选择]Lubricating oil systems are fitted with a wide variety of strainers some of which can be cleaned in site while others have replaceable cartridgesThe bold and italic word “which” means （）.
A. lubricating oil
B. lubricating oil systems
C. strainers
D. cartridges
[单项选择]The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）
A. the same, whether at sea, or during maneuvering
B. adjusted during each hour of operation while at constant RPM
C. higher at sea than while maneuvering
D. lower at sea than while maneuvering
[单项选择]Which lubricating oil additive is used in diesel engines to reduce the tendency for sludge and varnish to form on the engine parts?（）
A. Flash point improvers
B. Pour point improvers
C. Inhibitors
D. Foam suppressors
[单项选择]The function of lubricating oil is to （）
A. maintain even distribution of bearing wear
B. maintain a constant oil temperature
C. maintain a pressurized film between moving surfaces
D. remove entrained water
