(单选题)
An acceptable means of tightening connecting rod and main bearing cap bolts is to measure the () Ⅰ.torque applied to each nut and bolt assembly Ⅱstretch of each nut before and after tightening
AⅠonly
BⅡ only
Cboth Ⅰ and Ⅱ
Dneither Ⅰ nor Ⅱ
正确答案
答案解析
略