【单选题】学生在简历中常常写“精通×××”,这主要想要表达某种S。那么这是否充分呢?
A. 表明了部分S B. 充分表明了S C. 不能确定 D. 根本不充分
A. 表明了部分S B. 充分表明了S C. 不能确定 D. 根本不充分
举一反三
- 学生在简历中常常写“精通×××”,这主要想要表达某种S。那么这是否充分呢
- If S is an infinite set of real numbers, is there a number in S that is less than every other number in S ?() (1)Every number in S is an integer. (2)Every number in S is positive. 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.
- If S is an infinite set of real numbers, is there a number in S that is less than every other number in S ?() (1)Every number in S is an integer. (2)Every number in S is positive. 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.
- S is a set of integers such that i) if a is in S. then -a is in S, and ii) if each of n and b is in S, then ab is in S. Is -4 in S ?() (1)1 is in S. (2)2 is in S. 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.
- 【单选题】下面哪一项是关于确定选题的错误描述?() A. 要衡量其学术价值和意义 B. 要充分了解与选题相关的研究热点 C. 论文选题范围无关紧要 D. 要充分衡量选题难度与自身储备