带式输送机托辊的作用是支撑载重胶带和空回胶带。
参考答案：对
如果m满足|-m|＞m，那么m是（ ）
A．正数
B．负数
C．非负数
D．任何有理数
The woman has something wrong with her eyes and has to have them _________.
A．operated
B．operated on
C．operate
D．operate on
