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【简答题】
电压与电流之间总是具有直线关系的电阻称为____。全部由线性原件构成的电路叫做____。
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参考答案:
举一反三
【简答题】Nowadays , the Internet is usually one of the first places a lonely heart turns to as the following story shows. A 63-year-old retired woman in Zhengzhou , made headlines two days after she posted an ...
【判断题】In history, the northern peoples were mostly engaged in farming.
A.
正确
B.
错误
【判断题】In history, the northern peoples were mostly engaged in farming.
A.
正确
B.
错误
【简答题】When Carly Fiorina became Hewlett-Packard’s first female chief executive officer, the existence of her househusband, Frank Fiorina, who had retired early from AT&T to support her career, was a mini-se...
【简答题】静脉治疗操作时,最简单有效的预防感染的方法是什么?
【单选题】预防病毒感染最有效的方法是( )
A.
使用抗毒素
B.
使用抗病毒化疗药物
C.
使用中草药
D.
免疫预防
E.
使用干扰素
【单选题】She sobbed ___________, and her thin body was shaken.
A.
hysterically
B.
hysterical
C.
hyster
D.
hystering
【单选题】下列物质的分子结构中,存在着p-π共轭效应的是( )
A.
1 , 3 -戊二烯
B.
2 -丁烯
C.
1 -氯 - 2 -丁烯
D.
2 -氯 - 2 -丁烯
【单选题】In history, the northern peoples were mostly engaged in farming.
A.
T
B.
F
【单选题】下列关于三层设备转发数据包的过程说法错误的是( )
A.
查看目的地址与路由表中条目是否匹配时,是看主机号部分是否相同
B.
如果与目的地址匹配的路由条目只有一条,则按照这条路由转发数据包
C.
如果没有与目的地址匹配的路由,则丢弃该数据包
D.
如果有多条路由与目的地址匹配,则选择掩码最长的路由
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