单选题Valve lash, or clearance refers to the （）Aclearance between the top of the valve stem and the rocker armBcompression of the valve springsCclearance between the valve seat inserts and the headDout of roundness of the fuel injection cams
单选题
Valve lash, or clearance refers to the （）
A
clearance between the top of the valve stem and the rocker arm
B
compression of the valve springs
C
clearance between the valve seat inserts and the head
D
out of roundness of the fuel injection cams
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