题目内容

计算机网络体系结构中每层可能会有若干个协议，一个协议也可以属于若干个层次

A. 对
B. 错

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The water _____ from the tap and damaged all the books in my study.

A. sprayed
B. puzzled
C. inclined
D. exported

In the United States, Congress makes the law and the President _____ it.

A. orders
B. conquers
C. execute
D. hedges