單項選擇題
A.0.2~0.3 B.0.1~0.3 C.0.2~0.4 D.0.2~0.5
A.50~100 B.100~200 C.150~200 D.200~300
A.1% B.2% C.3% D.5%
A.50~100 B.100~200 C.150~250 D.200~400
A.3 B.4 C.5 D.6
A.地形起伏、剝離層與有用層厚度有變化的料場 B.地形平緩、有用層厚度較穩(wěn)定的料場 C.勘探網(wǎng)(點(diǎn))布置不規(guī)則的料場 D.地形起伏、勘探網(wǎng)(點(diǎn))布置不規(guī)則的料場
A.2.5~3.5 B.1.5~2.5 C.1.5~3.5 D.2.0~3.5
A.6 B.8 C.9 D.12
A.<100 B.100~200 C.150~250 D.200~400
A.50~100 B.100~200 C.200~300 D.200~400