监测系统一般由地面中心站、井下工作站、传输系统三部分组成。
参考答案：对
Since many young people have become rich on Taobao.com, I wonder what ________ is like to run a successful on-line business.
A．that
B．this
C．it
D．one
外伤性前房角后退的主要并发症有（）
A.低眼压
B.青光眼
C.前房积血
D.前房加深
E.调节麻痹
