A.傳遞扭矩小B.對(duì)中性好C.結(jié)構(gòu)簡(jiǎn)單可靠D.拆裝方便E.可起緩沖和過載保護(hù)作用
A.架捆1.0B.錨噴1.1C.砌?1.2D.裸體巷道0.8E.單體支柱0.9
A.甲級(jí)隊(duì)5500mB.甲級(jí)隊(duì)5000mC.乙級(jí)隊(duì)4500mD.乙級(jí)隊(duì)4000mE.丙級(jí)隊(duì)3500m