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You are upgrading a computer from Windows 98 to Windows 2000 Professional. The computer is a 400-Mhz Pentium III, and has 128 MB of RAM and a 10-GB hard disk. You are performing the installation by using the Windows 2000 Professional CD-ROM. After the text mode installation portion is complete, you restart the computer. The BIOS virus checker on your computer indicates you’re your computer is infected with a Master Boot Record virus.
What should you do before you continue the installation?（）

A．Remove the virus checker in Windows 98.
B．Disable the BIOS virus checker and restart the computer.
C．Run Fixmbr.Exe from the Windows 2000 Professional CD-ROM.
D．Modify the Boot.ini file to include a signature parameter on the ARC path of the system partition.

单项选择题

在薄层色谱法中，薄层板活化的温度一般为A.60℃B.80℃C.110℃D.130℃###S

A.60℃
B.80℃
C.110℃
D.130℃
E.150℃

根据下列材料回答下列各 题。 A．普萘洛尔 B．氢氯噻嗪 C．可乐定 D．硝普钠 E．哌唑嗪 可产生首剂现象的药物是

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在薄层色谱法中，薄层板活化的温度一般为A.60℃B.80℃C.110℃D.130℃###S

根据下列材料回答下列各题。 A．普萘洛尔 B．氢氯噻嗪 C．可乐定 D．硝普钠 E．哌唑嗪可产生首剂现象的药物是