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发布时间:2023-12-21 21:09:56

[单项选择]Are all of the numbers in a certain list of 15 numbers equal ?()
(1)The sum of all of the numbers in the list is 60.
(2)The sum of any 3 numbers in the list is 12。
A. 条件(1)充分,但条件(2)不充分.
B. 条件(2)充分,但条件(1)不充分.
C. 条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.
D. 条件(1)充分,条件(2)也充分.
E. 条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.

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