主工艺系统升温时，设备人员要注意检查（）。
A、管线吊点是否松开
B、管线是否泄漏
C、管线有无形变
D、热媒炉负荷
参考答案：A
Our math teacher always _____ an old shirt. [ ]
A. wear
B. wears
C. put on
D. puts on
It’s wise to forget things which aren't worth ______.
A．being remembered
B．remembering
C．to be remembered
D．to remember
