Which FOUR of the following are qualities of good information?Select the correct options. A: Authoritative B: Complete C: Cost-beneficial D: User targeted E: Error free F: Easy to read

完整登录的脚本：（用户名为"yctei",密码为”123456“）#!/bin/bashecho "user:"echo "passwd:"read passwdif [ "$user" = "yctei" ] && [ "$passwd" = "123456" ]; thenecho "SUCCESS!"else echo "user name or passwd ERROR!"

下列是全局变量的是（）。 A: @error B: @@error C: !error D: error（）

在linux中，设置以后新建用户的主目录均放在/user目录下的命令是（）。 A: useradd-d/user B: useradd- C: /user D: useradd-b/user E: useradd- F: -b/user

The following is not the geometric error of machining process system (). A: machining principle error B: geometric error of machine tool C: adjustment error D: tool manufacturing error

将字段User改为user需要编写| rename User user

what are the task assessment of user task model( ) A: What setbacks? B: Study users review and evaluate actions after completing tasks? C: By what method? How about satisfaction D: Is there any way to correct the operation error?

下列不属于VBA提供的On Error语句形式为()。 A: On Error Goto标号 B: On Error Then 标号 C: On Error Resume Next D: On Error Goto 0

The following is the machining principle error () . A: approximate profile error of forming tool B: spindle revolving error of machine tool spindle C: guide error of machine tool D: fixture error

下列常量中，不能指定trigger_error()函数错误类别的是（）。 A: E_USER_NOTICE B: E_USER_WANNING C: E_USER_ERROR D: E_ERROR