兵的军衔由什么单位的主官批准？
参考答案：
连或者相当于连的主官批准。
I was ____ he received an invitation from his friend to visit Chongqing ____ he felt
on top of the world. [ ]
A. when; who
B. that ; that
C. when; that
D. that; where
下列关于良性病毒的说法，错误的是______。
A．通常表现显示相关信息、自我复制B．不破坏计算机内的数据C．不影响系统运行D．传染能力强
