DW的取值范围是( )。A.-1≤DW≤0 B.-1≤DW≤1 C.-2≤D

资格题库2022-08-02  27

问题 DW的取值范围是( )。A.-1≤DW≤0B.-1≤DW≤1C.-2≤DW≤2D.0≤DW≤4

选项 A.-1≤DW≤0
B.-1≤DW≤1
C.-2≤DW≤2
D.0≤DW≤4

答案 D

解析
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