A.鉆探 B.井探 C.觸探 D.地球物理勘探
A.按實(shí)際m計(jì) B.以一批計(jì) C.忽略不計(jì) D.按實(shí)際t計(jì)
A.1/3 B.1/2 C.2/3 D.3/4