A.200m B.300m C.400m D.100m
A.2#巖石炸藥和4#抗水巖石炸藥各半 B.2#巖石炸藥 C.4#抗水巖石炸藥 D.乳膠炸藥占15%,4#抗水巖石炸藥占85%
A.0.7 B.0.75 C.0.8 D.0.9