【单选题】
在网络协议的三个基本要素中，_____是数据和控制信息的结构或格式。___
A. 语义
B. 语法
C. 服务
D. 词法
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答案
B
解析
暂无解析
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在下面对OSI参考模型的数据链路层的功能特性描述中，哪一项是不正确的？___
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【单选题】
下面属于TCP/IP协议族中网络互联层协议的是___。
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C. ICMP、ARP、IP
D. FTP、IGMP、SMTP
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Having practiced so many times, I feel very ___ of my ability to deliver the presentation successfully.
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The university decided to increase the ___ of the lecture hall, which has only 200 seats.
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Smart phones – with cameras and color screens – can ___ images and data using wireless network technology.
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Don’t take someone you get to know from the Internet to your house no matter how ___ he sounds.
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This kind of exercise will ___ your creativity, renew your energy, and unlock your potential.
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I’ll be happy to help you, ___ you won’t take up too much of my time.
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For years, scientists have debated the ___ dangers of building another nuclear plant after the terrible accident.
A. available
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It was a worthwhile attempt ___ it failed to achieve its purpose that we had hoped for.
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There is no greater importance ___ cultivating independence in children.
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He has made it very clear ___ we should observe the new rules.
A. what
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It was when I read his letter ___ I realized he had given me huge help.
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Don’t worry too much, Jane. Your son ___ home already. Let’s go back and check it out.
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___ they have written about the behaviors of animals is hardly anything new.
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Mothers tend to be too ___ toward their children. They should let them see more of the worl D.
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Showing some sense of humor can be a(n) ___ way to deal with some stressful situations.
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【单选题】
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