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【单选题】
某院校的学生成绩信息管理系统中,成绩输入范围为0~100分,根据等价类划分法的原则,则学生的成绩可划分为A.
2 个有效等价类和2个无效等价类
B.
1 个有效等价类和2个无效等价类
C.
2 个有效等价类和1个无效等价类
D.
1 个有效等价类和1个无效等价类
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A.
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B.
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C.
告诉警官着火的具体地点(部位)
D.
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