对防渗设施的检查内容包括：保护层是否完整、渗漏（）和水色有无变化。
A.重量
B.成分
C.总时间
D.水量
参考答案：D
I was out of town at thetime, so I don't know exactly how it ____. [ ]
A. was happening
B. happened
C. happens
D. has happened
功用为清宣温燥，润肺止咳的方剂为（）
A.杏苏散
B.清燥救肺汤
C.麦门冬汤
D.桑杏汤
E.桑菊饮
