A.0<α≤1/2 B.1/2<α≤1 C.1<α≤3/2 D.3/2<α

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问题 A.0<α≤1/2B.1/2<α≤1C.1<α≤3/2D.3/2<α<2

选项 A.0<α≤1/2
B.1/2<α≤1
C.1<α≤3/2
D.3/2<α<2

答案 D

解析
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