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【多选题】
在客户机上运行以下Ping命令,出现下列结果,可能的原因是( ) C:\Documents and Settings\user>ping www.mitu.cn Pinging www.mitu.cn [59.56.176.48] with 32 bytes of data: Request timed out. Request timed out. Request timed out. Request timed out. Ping statistics for 59.56.176.48: Packets: Sent = 4, Received = 0, Lost = 4 (100% loss)A.
DNS服务无法联系
B.
域名解析结果过时
C.
该域名的计算机出故障
D.
其他三项都可能的
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举一反三
【多选题】有一交流电 ,加在电感L为100mH的电感线圈两端,下面叙述正确的是
A.
流过电感的电流的初相位是零度。
B.
流过电感的电流最大值是12.1A
C.
感抗XL是31.4Ω。
D.
流过电感的电流瞬时值表达式为
【判断题】True or false.Someday sloppy people will put everything in order, getting round to doing everything they've included on their agenda,
A.
正确
B.
错误
【简答题】若正弦电压u=220 sin100πtV加在电感勾L=0.0127H的线圈上，试求电感元件的无功功率。
【判断题】Someday sloppy people will put everything in order, getting round to doing everything they’ve included on their agenda.
A.
正确
B.
错误
【单选题】Which of the following is the author's attitude towards a sloppy and indulgent culture?
A.
He is in favor of it.
B.
His view is balanced.
C.
He is slightly critical of it.
D.
He is strongly critical of it.
【简答题】某电感线圈，两端电压为 ，电流为 ，试求该线圈电阻R和电感L。
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