路由器工作在OSI的哪一层（）
A.传输层
B.数据链路层
C.网络层
D.应用层
参考答案：C
在商业银行设立国别风险限额和确定国别风险准备金计提水平时，应充分考虑国别风险评级结果。
She'll never forget her stay there （）she found her son who had gone missing two years before.
A. that
B. which
C. where
D. when
