维护人员的职责是：巡回检查，发现隐患，及时处理，以及进行预防性检修等。
参考答案：对
治气滞胎动证可应用()
A．紫苏
B．香薷
C．半夏
D．防风
E．麻黄
用所给词的正确形式填空。
1. They work out the difficult maths problem all by _____ (oneself) today.
2. What would you do if you _____ (win) a scholarship?
3. If it _____ (be) nice today, we _____ (go) for a picnic. But we were unlucky today.
4. If I _____ (have) time, I could play with you.
5. If you had got up earlier, you would _____ (catch) the train.
