A.1/100~1/200 B.1/200~1/300 C.1/300~1/400 D.1/400~1/500
A.6~12h B.12~24h C.24~48h D.48h以上
A.100mm B.120mm C.130mm D.150mm
A.200mm B.300mm C.400mm D.500mm
A.300kg B.310kg C.320kg D.330kg
A.70mm B.80mm C.90mm D.100mm
A.一 B.二 C.三 D.四
A.履带式起重机 B.汽车式起重机 C.轨道式塔式起重机 D.附着式塔式起重机
A.65% B.75% C.85% D.95%
