科马斯隧道式烘梗丝机在工作时,筛网清洗系统开始工作,四组清洗喷嘴按顺序动作,每组每次工作()秒钟。
A. 50
B. 100
C. 200
D. 500
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平面划线是在零件的一个平面或几个互相平行的平面上划线。立体划线是在工作的几个互相垂直或倾斜平面上划线。
A. 正确
B. 错误
Word 2003中文版为中文()。
A. 系统软件
B. 字处理软件
C. 应用软件
D. 图形软件
Your home computer runs Windows 2000 Professional. You have just installed a new application and restarted the computer. During the boot process you receive the following error message: "NTLDR is missing - Press any key to restart." You do not have an emergency repair disk. You want your computer to start properly. You want to do this with the least amount of administrative effort. What should you do?()
A. Reinstall the operating system.
B. Start the computer by using the Windows 2000 Professional CD-RO
C. Select Repair option and choose the option to verify system files.
D. Start the recovery console and type Diskpart from the command prompt.
E. Start the recovery console and enter Fixmbr from the command prompt.
公民具有民事权利能力从()。
A. 出生时起到死亡时止
B. 10周岁时起到死亡时止
C. 18周岁时起到死亡时止