更多"Combustion gases formed in the cyli"的相关试题:
[单项选择]The bore of each cylinder is formed in a liner which can be （） when worn out.
A. welded
B. replaced
C. drilled again
D. bored
[单项选择]Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
A. chromium plating piston rings
B. knurling the piston skirt
C. extended maximum power operation
D. applying load to a cold diesel engine
[单项选择]If the flame from combustion in the cylinder of a four-stroke engine past the piston into the space below, the accumulation of flammable mixture would be ignited, thus resulting in （）.
A. the crankcase explosion
B. lifting of the cylinder safety valve
C. a scavenge fire
D. opening of the manhole
[单项选择]Forcing the exhaust gases form the cylinder of an operating diesel engine with the aid of a blower is known as （）
A. scavenging
B. forced draft
C. turbo-charging
D. aspiration
[单项选择]How does combustion air enter the cylinder of a two-cycle diesel engine?（）
A. Cylinder head valves
B. Ports
C. Turbo chargers
D. Bleeder valves
[单项选择]The cylinder liner forming the cylinder wall and the inside of the water jacket is called a（）
A. dry liner
B. wet liner
C. jacket liner
D. corrugated liner
[单项选择]Cracks in cylinder and cylinder covers may （） from unequal heating.
A. make
B. cause
C. result
D. produce
[单项选择]On the top of the cylinder is mounted the cylinder cover which is pressed onto （） of the cylinder liner by means of nuts and studs.
A. the camshaft
B. the flange
C. the ridge
D. the bulge
[单项选择]The cylinder oil is pumped into the cylinder (via non-return valves) when the piston rings pass the lubricating orifices during （）
A. the upward stroke
B. the downward stroke
C. the power stroke
D. the suction stroke
[单项选择]The cylinder head, cylinder liner and （） form the combustion chamber.
A. frame
B. piston
C. crankcase
D. explosion plate
[单项选择]（） is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.
A. The fuel oil
B. The lube oil
C. The sea water
D. The fresh water
[单项选择]Additional heat extraction from the exhaust gases can be effected by adding an （） section to the unit in plants.
A. air cooler
B. economizer
C. injector
D. air blower
[单项选择]A pumproom is suspected of accumulating gases after a ventilation machinery breakdown. Where should the combustible gas indicator case be placed when testing the pumproom atmosphere for combustible gases? （）
A. In the lower level of the pumproom
B. In the middle level of the pumproom
C. In the upper level of the pumproom
D. On the deck outside the pumproom
[单项选择]Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by（）
A. natural aspiration
B. masked intake valves
C. air cells
D. scavenging air
[单项选择]Which of the following gases represents the greatest threat to personnel safety in an engine room where the exhaust is leaking from a diesel engine?（）
A. Carbon dioxide
B. Carbon monoxide
C. Carbon trioxide
D. Hydrogen sulfide
[单项选择]The two most common gases used in pneumatic system are （）
A. compressed air and nitrogen
B. helium and nitrogen
C. oxygen and hydrogen
D. oxygen and acetylene
