A.stress
B.strain
C.shear strength
D.ultimate tensile strength
第1题
A.hydrogen chloride
B.calcium chloride
C.sulfuric acid
D.muriatic acid
第2题
A.A piston
B.A fuel injection pump
C.A feed water pump
D.A lube oil pump
第3题
A.low water level
B.low oil pressure
C.excessively high fuel pressure
D.an improper air/fuel ratio
第4题
A.camshaft
B.reduction gears
C.rocker arm
D.connecting or piston rod
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