若有如下定义，则（ ） 是不正确的语句。 enum weekday{ mon,tue,wed,thu,fri } workday; A: workday=(enum weekday)3; B: workday=(enum weekday)(4-2); C: workday=3; D: workday=thu;

完形填空 A: workday B: interview C: class D: lecture

How will Mr. Johnson be paid if he works over the regular workday?

If you get too (stress) __________ at work, give yourself an hour of silence each day after your workday.

若有如下定义，则 是不正确的语句。 enum weekday{ mon,tue,wed,thu,fri } workday;

设有定义语句enumworkday{Mon=1,Tue,Wed,Thu,Fri}workday;则枚举常量Tue的值为______。

设有定义语句enumweekday{sun,mon,tue,wed,thu,fri,sat}workday;则枚举常量mon的值为______。

Peter is going to talk about a typical workday. Listen and match each activity in the right column with its corresponding time in the left column.[音频][img=1391x908]17e0cf06d39388f.png[/img]

现有关系模式: EMP(empno,ename,mgr,sal,workday) 以及DEPT(deptno,dname,loc) ,以下视图中不可能更新的为________

可以在定义时改变枚举元素的值，如：enum weekday{Sun=7, Mon=1, Tue, Wed, Thu, Fri, Sat}workday