The piston supporting body is mainly subjected to _____ stress.A.pushingB.centrifugalC.str

During working, when the piston is near the _____, the air ignites the fine spray of fuel.

The （) chamber is enclosed between the cylinder head and piston.

During the suction stroke, the piston is moving _____.A.inwardsB.outwardsC.downwardsD.upwa

The gudgeon pin is carried in _____ in the piston skirt.A.the bearingB.the crossheadC.boss

As to the piston cooling, of the following, which statement is not true？A.Because the pist

ACE is a risk factor to our body______.A. that ma