A.管線轉(zhuǎn)折點(diǎn)樁的測(cè)設(shè) B.管線線路轉(zhuǎn)折角的測(cè)量 C.里程樁和加樁的高程 D.里程樁和加樁的標(biāo)定
A.服務(wù)業(yè)B.以上都對(duì)C.民營(yíng)經(jīng)濟(jì)D.數(shù)字經(jīng)濟(jì)
A.1.2B.21.5C.10.6D.908