《煤炭采样:装船煤堆分层人工采样》对应的技术规范编号是[] 答案(B)A:HXLH-WI/CY-01-2016B:HXLH-WI/CY-02-2016C:HXLH-WI/CY-03-2016D:HXLH-WI/CY-04-2016
(B)