城市排水管道实地调查的内容有（）。
A.压力
B.管径
C.埋深
D.材质
E.流向
参考答案：B, C, D
How much is the yellow sweater?[ ]
A. One hundred yuan.
B. It's a fine day.
C. It's all right.
鼠疫耶尔森菌属Ⅰ类微生物菌种。
