【单选题】
网络协议是计算机网络互相通信的_____间交换信息时必须遵守的规则或约定的集合。___
A. 相邻层实体
B. 对等层实体
C. 同一层实体
D. 不同层实体
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答案
B
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下面属于TCP/IP协议族中网络互联层协议的是___。
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For years, scientists have debated the ___ dangers of building another nuclear plant after the terrible accident.
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He has made it very clear ___ we should observe the new rules.
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It was when I read his letter ___ I realized he had given me huge help.
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A. That
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