问题详情

The trend nowadays is to build the frame box as a separate fabricated construction and then, after stress relieving and machining the mating surfaces, to mount it on the _____. This has the advantage of saving weight.


A、seating

B、bed-plate

C、entablature

D、cylinder block

时间:2022-01-05 15:37 关键词:

答案解析

B