设置mysql服务器开机启动的命令是 A: chkconfig mysql on B: chkconfig mysqld on C: chkconfig mysql off D: chkconfig mysqld off

分析下面的JavaScript代码段,输出结果是()varlevel=3;document.write(level==1?"优":level==2?"良":level==3?"中":level==4?"及":"差",""); A: 中 B: 3 C: 差 D: 良

在linux中，常常存在不需要的服务，使用什么命令禁用这些服务（） A: chkconfig –F [服务名] B: chkconfig [服务名] off C: chkconfig –B [服务名] D: chkconfig [服务名] down

MP3是指（）。 A: Multimedia Processing-3; B: MPEG-3; C: MPEG-2 Level 3; D: MPEG-1 Level 3;

【单选题】享有报价优先推荐和Popular Supplier标识的等级是? A. Level 4 B. Level 1 和 Level 2 C. Level 3 和Level 4 D. Level 1

中国大学MOOC: Abraham Maslow’s Hierarchy of Human Needs are: Level 1 Physical Needs, Level 2 Safety Needs, Level 3 Esteem Needs , Level 4 Social Needs and Level 5 Self-Realization Needs.

Read the passage again and choose the best answer to complete each statement.（1--8）1. The Exhibition Hall is on _______. A: Level 1 B: Level 2 C: Level 3

________<br/>means the level for which appropriate additional<br/>protective security measures shall be maintained for a period of time<br/>as a result of heightened risk of a security incident. A: Security level 1 B: Security level 2 C: Security level 3 D: Security level 4

编程实现系列推断,如果a>60,则level=1;如果a>70,则level=2;如果a>80,则level=3;如果a>90,则level=4,并以对话框的方式在页面上输出结果。

过程评估设计的5个层次中，本课程介绍的计算机辅助过程设计主要应用于哪些层次： A: Level 1: Order-of-Magnitude B: Level 2: Project Planning estimate C: Level 3: Preliminary Engineering D: Level 4: Detailed Engineering E: Level 5: Procurement and Construction