单项选择题

There being no witness on the spot, the police were delyed by the ________of informtionbou

t theThere being no witness on the spot, the police were delyed by the ________of informtionbout the crime.nlysis B．disppernce C．bsence D．considertionA．analysisB．disappearanceC．absenceD．consideration

在线练习

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问答题

EIA/TIA-568标准规定的568B双绞线2、4、6、8线芯顺序是_、蓝、绿、棕

答案：橙、白

问答题

EIA／TIA的布线标准中规定了双绞线的568B线序是什么顺序 EIA/TIA的布线标准中规定了双绞线的568B线序是什么顺序

答案： EIA/TIA的布线标准中规定了双绞线的568B线序如下：1. 绿白2. 绿色3. 橙白4. 蓝色5. 蓝白6. 橙色7...