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【简答题】
A. Getting your thoughts down on paper is not the final stage of writing a good paragraph or essay. B. There remains the rewriting of the first draft so as to shape your idea into a carefully style composition. C. Finally, for smoothness and balance, changes are made between sentences or paragraphs. D. A different word may be substituted for the original word because it is easier to understand, is more colorful, gives a more precise meaning, or provides variety. E. Ordinarily, editing involves changes at three points: in individual words, within sentences, and between sentences. F. At the sentence level, phrases may be put in different order, structures of modification revised, different verb structures selected, or the length of phrases or whole sentences may be altered. G. At the word level, spelling and capitalization are checked, but more creatively, words are often changed. H. Such changes, designed to clarify relationships between ideas, are often accomplished by punctuating more adequately, by introducing more effective transitional devices, or by restating or removing awkward phrases and sentences. I. Editing then—the self-conscious appraisal and revision of your own work—usually makes the difference between a merely acceptable and a truly superior piece of writing.
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参考答案:
举一反三
【判断题】EPON帧结构中,EPON帧对Ethernet帧的修改不包括SLD。
A.
正确
B.
错误
【单选题】EPON下行帧结构的特点错误的是()。
A.
下行帧是一个复合帧
B.
下行帧包含多个变长数据包和同步标签
C.
每一个变长数据包是对应每一个特定地址的ONU的
D.
每一个数据包都包含变长数据包以及校验码几部分
【判断题】上海人和商贸的联系主要包括:运输贸易、商业买卖和智慧。
A.
正确
B.
错误
【单选题】EPON下行帧结构的特点错误的是( )
A.
每一个数据包都包含变长数据包以及校验码几部分
B.
下行帧包含多个变长数据包和同步标签
C.
 下行帧是一个复合帧
D.
每一个变长数据包对应每一个特定地址的ONU
【简答题】EPON技术在原有的以太网帧结构中加入( )用于标识每个ONU。
【简答题】常见的活动受限的原因有 和 。
【单选题】货物运输合同大多是格式合同,就是()
A.
诺成合同
B.
实践合同
C.
定期运输合同
D.
采用留置的方式担保
【简答题】常见的活动受限的原因有 、 和社会因素 。
【多选题】epon帧结构的特点说法正确的是()。
A.
采用802.3标准帧格式,分为上、下行帧
B.
下行帧是一个复合帧,包含多个变长数据包和同步标签
C.
下行帧每一个数据包都包含帧头,变长数据包以及校验码几部分
D.
上行帧分为若干时隙,每个ONU侦听时隙标志,在属于自己的时隙上将数据发送出去,时隙结束时关闭发送
【判断题】EPON帧是基于以太帧。
A.
正确
B.
错误
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