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【单选题】
如果要创建一个新的表,其中有一个字段是系学生人数number,要求限制在200人到600人之间,正确的语句为( )A.
number>=200 and number<=600< /div>
B.
check(number>=200 and number<=600)< /div>
C.
check(number >= 200 or number<=600)< /div>
D.
number >= 200 or number<=600< /div>
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