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【单选题】
电路如图所示，已知E＝9V，R 1 ＝1Ω，R 2 ＝8Ω，R 3 ＝5Ω，C＝12μF，则电容两端的电压U c 为（）V。A.
4
B.
6.8
C.
8
D.
9
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反馈参考答案：
举一反三
【单选题】()风格室内设计强调突破旧传统,采用新的材料、新的结构,重视功能和空间的组织,造型简洁,反对多余装饰,注重材料的性能、质地和色彩的搭配。
A.
传统风格
B.
自然风格
C.
现代风格
D.
后现代风格
【简答题】●Network managers have long awaited practical voice-overIP(VOIP)solutions.VOIP promises(71)network management and decreases costs by(72)a company's telephony and data infrastructures into one network...
【单选题】Network managers have long awaited practical voice-over-IP(VOIP)solutions. VOIP promises(71)network management and decreases costs by(72)a company's telephony and data infrastructures into one network...
A.
complicated
B.
useful
C.
ease
D.
orderly
【单选题】Network managers have long awaited practical voice-over-IP(VOIP)solutions. VOIP promises ease network management and decreases(66)by converging a company's telephony and data infrastructures into one ...
A.
time
B.
cash
C.
costs
D.
space
【单选题】现代风格产生于（）世纪末，强调突破旧传统，创造新形式，重视功能和空间组合，注意发挥结构构成本身的形式美，造型简洁，取消多余装饰，崇尚合理的构成工艺，尊重材料的性能。
A.
17
B.
18
C.
19
D.
20
【简答题】现代风格室内设计强调突破旧传统,采用( )、( ),重视( )和空间的组织,造型简洁,反对多余装饰,注重( )、质地和色彩的搭配。
【多选题】Which two statements are true about Voice over IP （VoIP） packet delivery in a digital infrastructure？ （）
A.
Packets can arrive out of order.
B.
Packets must take the same path to the destination.
C.
Once packets are received at the destination router， the router performs sampling to ensure the quality of the voice traffic.
D.
Packets can experience varying delays across the network.
E.
Packets containing voice samples are sequentially numbered by default， allowing for reordering upon arrival at the terminal router along the path.
【单选题】Network managers have long(140)practical voice-over-IP(VOIP)solutions. VOIP(141)ease network management and decreases costs by converging a company's telephony and data infrastructures into one networ...
A.
await
B.
awaited
C.
awaiting
D.
awaits
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