A.1 B.1/2 C.1/6 D.1/12 E.-1/6

考试题库2022-08-02  17

问题 A.1B.1/2C.1/6D.1/12E.-1/6

选项 A.1
B.1/2
C.1/6
D.1/12
E.-1/6

答案 C

解析
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