总资产周转率
参考答案：
总资产周转率是指企业在一定时期主营业务收入净额同平均资产总额的比率。
Many people are not________the danger of their children's bad habits, which lead to failing to make their dreams come true.
A．well aware to
B．very aware of
C．aware that
D．well aware of
电信的网管体系跨多个电信部门包括管理基础网和（）。
A、多种业务网
B、管理网
C、子网
D、网层
