A.大樣圖B.標(biāo)準(zhǔn)圖C.平面圖D.節(jié)點(diǎn)圖
A.DN100PE管B.DN300球管C.DN600鋼管D.DN300剛性接口混凝土管
A.起點(diǎn)B.終點(diǎn)C.轉(zhuǎn)向點(diǎn)D.管件