自然保护区的主管部门包括（）
A.林业主管部门
B.农业主管部门
C.地质矿产主管部门
D.水利部门
E.海洋主管部门
参考答案：A, B, C, D, E
The author of the report is well _____ with the problems in the hospital because he has been working there for many years.
A．acquainted
B．informed
C．enlightened
D．advised
简述电磁流量计的使用条件
