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单选题
As to the piston cooling, of the following, which statement is not true?（）
A
Because the piston is exposed to very high temperature, it must be cooled
B
The lower the piston cooling temperature is, the better it is
C
Both water and lube oil can be used as coolant
D
One of the piston cooling methods is vibration cooling, with better effect
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更多 “单选题As to the piston cooling, of the following, which statement is not true?（）A Because the piston is exposed to very high temperature, it must be cooledB The lower the piston cooling temperature is, the better it isC Both water and lube oil can be used as coolantD One of the piston cooling methods is vibration cooling, with better effect” 相关考题
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Because the piston is exposed to very high temperature, it must be cooledB
The lower the piston cooling temperature is, the better it isC
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单选题Piston cooling fins are located（）A
atop the piston crownB
beneath the piston crownC
at the base of the piston skirtD
inside the cylinder liner cooling water jacket
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