试题详情
多项选择题An approved constrution portfolio should be provided on all type of unit. The followingcontent should be contained in the construction portfolio:（）

A、The location and extent of application of different grades and strengths of materials.

B、The approved and available welding procedure adopted in the construction

C、Restrictions or prohibitions of repairing or modification

D、None of them

  • A,B,C

  • 关注下方微信公众号，在线模考后查看

热门试题