A.the bad smoke
B.the smoky exhaust
C.the exhaust temperature
D.the peak pressure
第1题
A.improper adjustment
B.contaminated fuel
C.kinked fuel lines
D.excessive engine vibration
第2题
A.flowed
B.flowing
C.mixing
D.circulating
第3题
A.before TDC and close after BDC
B.after TDC and close after BDC
C.before TDC and close before BDC
D.after TDC and close before BDC
第4题
A.to remove heat from oil cooled pistons
B.to wash away wear detritus
C.to neutralize acidic products
D.all of the above
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