Today computers _____ in both cities and town. [ ]
A. are using
B. are used
C. were used
B
基金管理人信息披露事项具体涉及的环节有( )。
A.基金募集
B.上市交易
C.投资监管
D.净值披露
哪些特征可以作为枝角类分类依据?