波纹补偿器在管网安装完毕后拉杆螺丝（）。 ["保持出厂时的位置","紧上","松开"]
软件工程的造价一般按商用软件购置和软件开发两种类型分别评估和编制。
简述运用谈话法应注意的事项。
You have a server that runs Windows Server 2003 Service Pack 2 (SP2). An incremental backup runs every weekday at 01:00. On Friday, you examine the Windows Backup log and discover that the last entry in the log is one week old. You need to identify the problem that prevents the backup from running. What should you do? （） [" From Scheduled Tasks, examine the log."," From Event Viewer, examine the system log."," From Windows Backup, enable detailed logging and then perform a manual backup."," From Windows Explorer, examine the files in the %systemroot%\\system32\\LogFiles folder."]
刘禹锡《酬乐天扬州初逢席上见赠》中的“乐天”是指（）。
论早期尸体现象和晚期尸体现象
