题目内容

如果要查询工资员工的平均工资，用哪个聚合函数（）

A. SUM
B. ABS
COUNT
D. AVG

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在select语句中，要对查询结果按某个字段进行降序处理，则在order by 短句中使用参数（）

A. asc
B. between
C. in
D. desc

___________intelligence is displayed by humans, while AI is demonstrated by machines.

A. Nation
B. Nature
C. Natural

The AI ___________brings a lot of convenience to people who travel abroad.

A. translator
B. translation
C. translating

This means they can ensure high levels of ___________ with advanced technology.

A. efficiency
B. efficiencies
C. efficient