After SELECT, only the field name of the table can appear, not an<br/>expression.( )

The following can be used as a field ( ). A: user’s name B: user’s telephone C: product name D: product supplier

查看mysql已经被安装的命令是（） A: rpm -qa|grep mysql B: find / -name mysql C: yum search mysql D: ps -aux|grep mysql

Assume that the table "employee" has fields such as number, name, age, title, and nationality. The field that can be used as key is(). A: number B: name C: age D: title

If you add a recipient's name to ________ in a message, you may just to inform him/ her of information they might be interested in, but they don’t need to take any action. A: the “to” field B: the subject line C: the “Cc” field D: the header

在执行添加数据时出现“Field 'name' doesn't have a default value”错误，导致错误的原因是

如下哪个字符串是Java中合法的标识符？ A: field$name B: super C: 3number D: E: number

安装mysql数据库时默认的用户名是（） A: root B: none C: name D: user

在创建副本集时通过哪个参数指定副本集的名字? A: --name B: --field C: --replSet D: --replSetName

The type of field generated by a DC tacho-generator is A: pulsating magnetic field B: static field C: rotating field D: do not need field