斜巷轨道运输保险绳直径必须与主绳一致，与主钢丝绳和矿车插销联接牢固。
参考答案：对
中东发展农业生产最缺乏的是（ ）
A．淡水
B．土地
C．劳力
D．肥料
A moving company charges a flat rate of $550 for loading its trucks and an additional $20 per 1/5 mile for moves within the city. How much would a move of 2.8 miles within the city cost ？（）
A. $690
B. $790
C. $830
D. $880
E. $1,010
