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【单选题】
You purchase a USB board, ISDN terminal adapter for your Windows 2000 Professional portable computer. You plug the device in to the USB port. Plug and Play fails to detect the new device. You test the device on a Windows 2000 Professional desktop computer. You find that plug and play correctly detects the device. You want to resolve the problem so that you can use ISDN terminal adapter on your portable computer. What should you do?（）A.
Use the Device Manager to enable the USB manager root hub.
B.
Use the Device Manager to enable the USB host controller in the current hardware profile.
C.
Contact the hardware manufacturer to obtain the upgrade for the Plug and Play BIOS.
D.
Turn off the computer plug in the ISDN terminal host adapter and restart the computer.
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举一反三
【单选题】The scientist knew nothing about the matter, because he was always _________ himself in his study.
A.
burying
B.
devoting
C.
focusing
D.
concentrating
【简答题】It happened towards evening, when I was resting in a cafe. I 36 a pair of newly bought white leather shoes, which were rather expensive. Then 37 came to me. He was in an unfit shirt, 38 pale and weak...
【单选题】从2000名学生中按不重复抽样方法抽取100学生进行调查,其中有女生45名,则样本成数的抽样平均误差为( )
A.
0.24%
B.
4.85%
C.
4.97%
D.
以上都不对
【简答题】收到宏达公司前欠货款 100 000元,收到银行收账通知单。(2分)
【单选题】从2000名学生中按不重复抽样的方法抽取了100名进行调查,其中有女生45名,则样本成数的抽样平均误差为
A.
0.24%
B.
4.85%
C.
4.97%
D.
以上都不对
【单选题】从2000名学生中按不重复抽样方法抽取了100名进行调查，其中有女生45名，则样本成数的抽样平均误差为( )。
A.
0.24%
B.
4.85%
C.
4.97%
D.
以上都不对
【简答题】It happened towards evening, when I was resting in a cafe. I a pair of newly bought white leather shoes, which were rather expensive. Then came to me. He was in an unfit shirt, pale and weak. He looke...
【单选题】从2000名学生中按不重复抽样方法抽取了100名进行调查，其中有女生45名，则样本比例的抽样平均误差为
A.
0.24%
B.
4.85%
C.
4.97%
D.
以上都不对
【单选题】从2000名学生中按不重复抽样方法抽取了100名进行调查，其中有女生45名，则样本成数的抽样标准误为
A.
0.24%
B.
4.85%
C.
4.97%
D.
以上都不对
【单选题】When I came in,he was ___his book.
A.
Concentrating on
B.
contributed on
C.
burying on
D.
Focused on
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