轮机英语
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[单项选择]A hot air start pipe indicates that there is ().
A. inefficient cooling
B. a leaking air start valve
C. a clogged drain valve
D. a leaking air bottle
[单项选择]A gudgeon pin in a trunk piston may be free to float and rotate, with () to limit axial movement.
A. split pins
B. crankpins
C. dipsticks
D. circlips
[单项选择]() supplies pilot air to control the cylinder air start valves.
A. An air compressor
B. An indicator cock
C. An air distributor
D. A safety valve
[单项选择]A high temperature alarm or () which will melt is used to guard against the explosion of compressor air pipelines.
A. a flame trap
B. a relief valve
C. a fusible plug
D. a bursting cap
[单项选择]A governor automatically controls engine speed by regulating ().
A. fuel supply
B. firing order
C. engine load
D. oil level
[单项选择]() usually helps to induce air movement to assist combustion.
A. Cylinder cover
B. Main bearing
C. The exhaust valve
D. The piston movement
[单项选择]A level gauge for a tank is to ().
A. give the pressure
B. give the contents
C. give the shape of the tank
D. give the accuracy level
[单项选择]A heater in the circuit facilitates warning of the engine prior to () by circulating hot water.
A. starting
B. stopping
C. to start
D. to stop
[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
[单项选择]A distance piece, with ground faces, known as a compression plate, may be interposed between the rod and the beating housing, its thickness being chosen to ensure the correct ().
A. compression pressure
B. compression test
C. compression ratio
D. compression clearance
[单项选择]A diesel engines crankcase oil level is found to be too high√ You should suspect that ().
A. the engine was over filled
B. there might be a fuel leak
C. there might be a water leak
D. all of the above
[单项选择]A cast steel strong back is fitted in way of the combustion space to help absorb ().
A. flame temperature
B. fuel oil
C. air movement
D. gas forces
[单项选择]() may have two emergency source of power, thus requiring two emergency switchboards.
A. Large passenger vessels
B. General cargo ships
C. Container ships
D. Oil tankers
[单项选择]A charge of fresh air is drawn into the engine cylinder and then () by the moving piston() very high pressure.
A. pressed;to
B. pressurized;with
C. pushed;in
D. compressed;to
[单项选择]A lubricant often has to perform many duties in any situation, in addition to its fundamental job of ().
A. resisting oxidization
B. reducing friction
C. promoting moving speed
D. developing inertia
[单项选择]A common trouble with the fuel pump plungers or fuel valve spindle is ().
A. broken down
B. stuck
C. oil leakage
D. carbonized
[单项选择]() clearances in the main or crank pin bearings will sometimes be indicated by loss of pressure in the lubricating system before any bearing knock is heard.
A. Too larger
B. Too smaller
C. Excess
D. Excessive
[单项选择]A distance piece, with ground faces, may be interposed between the rod and the bearing housing, its thickness being chosen to ensure the correct ().
A. expansion ratio
B. pressure ratio
C. compression ratio
D. clearance ratio
[单项选择]A common trouble with the fuel pump plunger or fuel valve spindle is ().
A. water leakage
B. steam leakage
C. oil leakage
D. air leakage
[单项选择]A distance piece, known as a () may be interposed between the rod and the bearing housing.
A. bearing shell
B. bearing liner
C. compression plate
D. lead wire
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