A.to increase
B.to speed up
C.to prevent
D.to reduce
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A.in order that
B.because of
C.in order to
D.owing to
A.should be correctly carried out
B.should correctly be taken place
C.should carried with care
D.must to carry out with great care
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
A.too low starting air pressure
B.main starting valve closed
C.neither A nor B
D.A and B
A.high compression pressure
B.low intake air temperature
C.low exhaust pressure
D.high scavenge air temperature
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