风玫瑰图是( )。
A．风向频率图 B．风向频率图和平均风速图C．平均风速图 D．大气的水平移动图
参考答案：B
The policeman asked the man ______ at 9:00 last night. [ ]
A. what he is doing
B. what was he doing
C. what he was doing
网络版财务软件中，权限能够控制到什么程度？（）
A.子系统级
B.模块级
C.操作按钮级
