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单选题
For years an acrimonious debate over how to protect heroin users impeded efforts in the U.S. to control the spread of AIDS.
A
convoluted
B
belied
C
stoked
D
encumbered
参考答案
参考解析
解析：
句意：几年来对如何保护海洛因吸食者的激烈辩论阻碍了美国为控制艾滋病传播而付出的努力。impede阻止。encumber阻碍。convolute旋绕。belie掩饰，伪装。stoke添燃料。
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单选题A customer has an IBM System Storage DS8700 and wants to reach the highest possible throughput in the back-end for a storage-pool-striped volume out of an extent pool with 8 ranks. Over how many device adapter pairs should a technical specialist spread the workload（）A
2B
4C
6D
8
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where you are goingC
where do you go toD
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depend onB
call onC
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DatafilesC
Redo log filesD
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to provide users with A single device that permits access to information anywhereB
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whichB
thatC
whatD
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It was accepted with doubts.B
It arose mixed feelings in some.C
It triggered off more debate inside the country.D
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supports Link Fragmentation and Interleaving C
provides the ability to connect a network of hosts over a simple bridging access deviceD
provides a consistent means of authenticating users (RADIUS for example)
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