流动式起重机可按底盘、结构形式、臂架形式与（）进行分类。
A.用途
B.尺寸
C.起重能力
D.外形
参考答案：A
—How do you find the match between Spain and Sweitzerland?
— Powerful Spain lost the game by 0-1.
A．I watched it on TV.
B．It’s amazing!
C．You guessed it!
D．Congratulations!
两车在甲、乙两地同时相向而行，7小时后相遇，如果每小时速度各增加8千米，经6小时后相遇．求甲、乙两地的距离．
