更多"Successful combustion inside the cy"的相关试题:
[单项选择]In order for combustion to occur inside a piping system such as a vapor collection header in a marine emmission control system , there must be（）.
A. fuel
B. oxygen
C. ignition
D. All of the above
[单项选择]Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
A. a shortened ignition delay period
B. a lean fuel/air mixture
C. excess fuel in the combustion chamber
D. rapid vaporization of injected fuel droplets
[单项选择]Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are （）.
A. operated manually once an hour
B. operated until the engine has started
C. placed into operation only at maximum load
D. adjustable to meet lubrication requirements
[单项选择]Boilers and cylinders are（）.
A. raw metallic products
B. finished metallic products
C. consumable products
D. Manufactured goods of large Size
[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]CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.
A. the discharge valve is open
B. the control box glass is broken
C. pressure from the control cylinders is detected
D. the control cylinders have been completely discharged
[单项选择]
Exhaust temperature increases in all cylinders, the possible cause may be（）
(1) increased scavenging air temperature
(2) air in fuel pumps and fuel valves
(3) fouling of air and gas passages
A. (1)+(2)
B. (1)+(3)
C. (2)+(3)
D. (1)+(2)+(3)
[单项选择]Cylinders of marine diesel engines are normally cooled by （）.
A. sea water
B. fine mineral oil
C. sanitary water
D. fresh water
[单项选择]The sequence of fuel injection into cylinders is determined by （）.
A. the steering
B. the driven gear
C. the turning gear
D. the timing gear
[单项选择]Turbulence is created in the cylinders of a diesel engine to （）
A. obtain injection lag
B. help mix fuel and air
C. increase combustion pressure
D. utilize higher injection pressures
[单项选择]The lubrication to the cylinders affected by the fire must be （）to prevent seizure and all scavenge drains must be （）to prevent the discharge of sparks and burning oil from the drains into the engine room.
A. decreased；opened
B. decreased；shut
C. increased；opened
D. increased；shut
[单项选择]You are loading a cargo that includes cylinders of acetylene aboard your break bulk vessel. Which statement is true? （）
A. The cylinders must be stowed at least 10 horizontal feet from corrosive materials in the same space
B. Stowage in the upper deck-deck is considered to be the equivalent of "on deck" stowage for this cargo
C. The cylinders must have a red label for flammability and a green label for compressed gas
D. The cylinders may be protected from the radiant heat of the Sun by laying a tarp on them
[单项选择]When the air charge contacts with the cylinders and pistons and mixes with the residual gases, it will（）
A. increase in temperature
B. lose its energy partly
C. expand and do work
D. begin to be compressed
[单项选择]The air supplied to the cylinders by a turbocharger is often reduced in volume by a/an （）
A. air compressor
B. diffuser
C. after-cooler
D. ventilator
[单项选择]Internal combustion engine crankcase vent outlets must be equipped with （）
A. hinged rain guards
B. corrosion resistant flame screens
C. dipsticks for measuring oil levels
D. crankcase ventilation fans
[单项选择]Cracks in the cylinders and cylinder covers may （） unequal heating.
A. result from
B. result in
C. give out
D. given from
[单项选择]CO2 cylinders，which protect the small space in which they are stored must（）.
A. NOT contain more than 200 pounds of CO2
B. be automatically operated by a heat actuator
C. have an audible alarm
D. All of the above
