A.formation of carbon on the intake and exhaust ports
B.high water jacket temperatures
C.overheated pistons and cylinders
D.an increase in lube oil viscosity due to fuel dilution
第1题
A.effective cylinder scavenging and cooling
B.constant pressure from the turbochargers
C.cooler operation of the exhaust system
D.effective constant pressure for turbocharger operation
第2题
A.shall take over
B.shall not take over
C.shall hand over
D.shall not hand over
第3题
A.face shield
B.a respirator
C.rubber gloves
D.an all purpose gas mask
第4题
A.look for a CO2 extinguisher
B.use a soda acid extinguisher
C.shut off the fuel supply
D.smother the fire with rags
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