What must an administrator do to prevent new telnet users from connecting to the system?（） rmdev -l /dev/pts。 touch /etc/nologin。 chdev -l sys0 -a nologin。 chuser -a login=false ALL。
在施工成本管理的任务中，根据成本信息和施工项目的具体情况，运用一定的专门方法，对未来的成本水平及其可能发展趋势作出科学估计的是（）。 施工成本计划。 施工成本预测。 施工成本分析。 施工成本控制。
下列项目中，既可以采用费率方式又可以采用人工计价的是（）。 A.软件服务 。 B.软件开发 。 C.商用套装软件实施 。 D.以上答案均不对。
mary would like to display a collapsed section on her video catalog form, she has created a section buy when she display the form in the client the section always opens expanded. which one of the following should mary do to collapse the section?（） nothing. Sections always open expanded 。 modify the section default properties to collapsed 。 modify the form propenties to display all sections collapsed 。 modify the section opened for reading property to auto-collapse&e。
在Excel中不能给文字添加哪种文字效果：（） 删除线。 双删除线。 上标。 下标。
A customer needs both a database and application server to communicate over a network. The new systems will be connected to the same network as the current IBM equipment with known IBM serial numbers. How could a pSeries technical specialist best determine which type of network card is appropriate， without making an additional call to the customer？（）
