接触网的定期检修及周期修分为（）和（）两种修程。
参考答案：维修、大修
Did you ever hear me ___ by the strict teacher.
A．be3ing scolded
B．scolding
C．scold
D．to be scolded
治疗血虚配伍补气药的理论基础是
A．气能生血B．气能行血C．气能摄血D．血能载气E．血能养气
