The cast iron guide-ways for () are attached to the top section and seal off the crankcase.
时间:2019-04-13 16:20:12 关键词:for,ways,attachedThe cast iron guide-ways for () are attached to the top section and seal off the crankcase.
A.the connecting rod
B.the cross-head
C.the piston rod
D.the air box
答案解析
B
举一反三