更多"The atmosphere（）certain gases mixed"的相关试题:
[单项选择]The atmosphere（）certain gases mixed together in definite proportions.
A. composes of
B. is made up
C. consists of
D. makes up of
[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
[单项选择]The process to remove exhaust gases by blowing in fresh air is called （）.
A. charging
B. supercharging
C. starting
D. scavenging
[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]Combustion gases formed in the cylinder of a diesel engine are prevented from blowing past the piston by （）
A. cylinder valves
B. compression rings
C. piston skirts
D. oil rings
[单项选择]The exhaust gases in a supercharged two-stroke/cycle diesel engine are expelled from the cylinder by （）
A. pumping action of the piston
B. pressure of the fuel charge
C. vacuum developed in the manifold
D. pressure of the fresh air charge
[单项选择]Scavenging is （） of exhaust gases by blowing in fresh air.
A. the suction
B. the compression
C. the removal
D. the deliver
[单项选择]In a （） boiler the hot gases from the furnace pass through the tubes while the water is on the outside.
A. water-tube
B. fire-tube
C. exhaust gas
D. None of the above is true
[单项选择]（） is the removal of exhaust gases by blowing in fresh air.
A. Gas exchange
B. Charging
C. Scavenging
D. Supercharging
[单项选择]The exhaust gases for a new engine should be （） when the engine operates under full load.
A. smoky
B. a little bit dense
C. visible
D. almost invisible
[名词解释] 混合血栓（mixed thrombus）
[单项选择]Emulsification of oil will occur when mixed with （）.
A. air
B. black oil
C. water
D. ice cream
[单项选择]When the garbage is mixed with some discharges having different disposal or discharge requirements, shall apply（）
A. any requirement appointed by the Officer
B. the most suitable requirement
C. the most stringent requirement
D. no requirement
