單項選擇題
A.30m B.40m C.45m D.50m
A.S/350 B.S/500 C.S/750 D.S/800
A.工作裝置 B.附屬機構 C.工作機構 D.附屬裝置
A.1 B.2 C.3 D.4
A.二套 B.四套 C.六套 D.八套
A.95% B.100% C.110% D.115%
A.10t B.15t C.16t D.20t