题目内容

在慢车调试前，将工厂发运的对重块总重量减去电梯额定载重（）％的对重块重量，其余的全部放入对重框内。

A. 10
B. 30
C. 50
D. 70

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You are the administrator of ExamSheet.net's network. You attempt to install a video driver on a Windows 2000 Professional computer. You receive the following error message: "Error 11 - Cannot install video driver." The driver was originally downloaded from the video card manufacturer's Web site. You have successfully used the driver in the past on other Windows 2000 Professional computers. You want to configure the Windows 2000 Professional computer to check for driver integrity and to allow you to install this video driver. What should you do? （）

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