保护箱与凸轮控制器或主令控制器配合使用，实现电动机的过载保护和短路保护，以及（）等保护。 失压。 零位。 超载。 限位。
You are a network administrator for ExamSheet.net's Windows 2000 network. You use a user account named User1 to log on tot a Windows 2000 Professional computer. The computer is used by different students in a classroom. User1 does not have administrative rights. However, you prefer to use this account for your daily activities. Using the Task Scheduler you schedule a task to run a command file named AddUsers.cmd that automatically adds six more student user accounts. You configure the task to run as the administrator account. After the task was scheduled to have run you open the Task Scheduler and discover a status of "Could not start" for the task. You also discover account logon failure audit events in the computer's Security log.You want the scheduled task to successfully run AddUsers.cmd. You want to accomplish this with the least amount of administrative effort. What should you do?（） Schedule the task using theATcommand.。 Reenter the password for the administrator account using the Task Scheduler.。 Log on with an administrative account and reschedule the task.。 Log on by using the local Administrator account. Then schedule the task to run under User1.。
盈亏临界点是（） 销售收人大于销售成本的销售量。 销售收人小于销售成本的销售量。 销售收人等于生产成本的销售量。 销售收人等于销售成本的销售量。
在签订施工合同时，要同时约定保修条款。防水工程的保修期限应不低于（）。 A.1年 。 B.2年 。 C.5年 。 D.工程设计年限。
不同时期入党誓词是什么？
下列生物治疗流感样症状的护理方法不正确的是：（）
