( )是用两根固定不动的抱杆吊装数量较多的塔群。
A.双抱杆滑移法B.双抱杆递夺法C.联合吊装法D.整体吊装法
参考答案:B
避火服适用于高温有火灼伤危险的场合,防火温度()℃,防辐射温度()℃。
A、833,1111
B、800,1000
C、600,900
D、600,1000
— Which do you like better, skating or skiing?
— _____ of them. I like running. [ ]
A. All
B. Both
C. Either
D. Neither