TCP在IP的基础上，提供端到端的（）的可靠传输。
参考答案：面向连接
—Thank you for giving us a wonderful Chinese dinner, Ms. Wang.
—__________________.
A．Oh. I’m afraid I didn’t cook very well.
B．I’m glad you enjoy it.
C．Come again when you are free.
D．It’s not polite of you to say so.
送行服务中，地陪应做好哪些工作?
