A.軌節(jié)(軌排)組裝、軌節(jié)運(yùn)輸、軌節(jié)鋪設(shè)、鋪?lái)恼?br /> B.軌節(jié)(軌排)組裝、掛線散枕、軌節(jié)鋪設(shè)、鋪?lái)恼?br /> C.軌節(jié)(軌排)組裝、掛線散枕、排線散枕、鋪?lái)恼?br /> D.軌節(jié)(軌排)組裝、軌節(jié)運(yùn)輸、排線散枕、安裝扣配件
A.頂面50mm B.頂面40mm C.頂面30mm D.頂面20mm
A.1:1B.1:1.5C.1:1.75D.1:2