A、A.Cylinder head valves
B、B.Ports
C、C.Turbo chargers
D、D.Bleeder valves
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A、How ofen do the course？ B、How about the flavour of this course？ C、How long does it preparefor dinner？ D、How long does it take to cook this course？
A、no matter it costs how much B、no matter how much costs it C、no matter how much it costs D、no matter how much does it cost
A、Combustion does not begin until the piston starts down on the power stroke B、Maximum combustion pressure is reached before TDC C、Turbulence in the cylinder causes a delay in ignition D、Maximum cylinder firing pressure is not developed until the piston passes TDC
A、failure of the fuel pumps B、starting air pressure too low C、stop valve in air line closed D、the turning gear still engaged
A、A.low compression B、B.failure of the fuel pump to discharge fuel C、C.incorrect timing of fuel pump D、D.turning gear being still on
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