单选题:如果字段"学分"的取值范围为1~6,则下列选项中,错误的有效性规则是(  )

题目内容:
如果字段"学分"的取值范围为1~6,则下列选项中,错误的有效性规则是(  ) A.>=1 and <=6
B.[学分]>=1 and [学分]<=6
C.学分>0 and 学分<=6
D.1<=[学分]<=6

参考答案:
答案解析:

BaseballsharesmanyfeatureswiththeEnglishgameofcricket.

BaseballsharesmanyfeatureswiththeEnglishgameofcricket. A.Right B.Wrong C.Notmen

查看答案

Silk,althoughitisconsideredadelicatefabric,isinfactverystron

Silk,althoughitisconsideredadelicatefabric,isinfactverystrong,butitisadverselya

查看答案

Hisideaisalwaysutterlydifferentfromhisclassmates,.

Hisideaisalwaysutterlydifferentfromhisclassmates,. A.hardly B.rarely C.simply D.

查看答案