单项选择题
The crank throws are displaced from （） to obtained the same number of degrees between the different crank throws.
A.one another B.the other C.each other D.each others
单项选择题 The crank pin journal is provided with large bores for （）.
单项选择题 The crank chamber oil （）.
单项选择题 The correct tightening is obtained by use of （） to measure the extension given to the bolts.
