A.0.633 B.0.733 C.0.833 D.0.933
A.343.7 B.353.7 C.363.7 D.373.7
A.礦石的開采損失率越低,礦石回采率就越低 B.礦石的開采損失率越低,礦石回采率不變 C.礦石的開采損失率越高,礦石回采率就越高 D.礦石的開采損失率越低,礦石回采率就越高