题目内容

物流服务的特点有哪些？（）

A. 从属性
B. 移动性和分散性
C. 可替代性
D. 即时性

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It was not until when the 10th Olympic Games were held in that China was invited for the first time to send athletes to compete.

Xu Haifeng, a sharpshooter, was the first gold medal winner in Chinese Olympic history.

A. 对
B. 错

In 2001, Beijing made the Olympic bid for the 2012 Olympic Games and won the right to host the 29th Olympic Games.

A. 对
B. 错

IP地址块210.161.111.1/22和201.21.151.1/21的子网掩码分别可写为

A. 255.255.252.0和255.255.248.0
B. 255.255.248.0和255.255.240.0
C. 255.255.254.0和255.255.252.0
D. 255.255.255.0和255.255.254.0