如下哪个表达式同(A>8)&&(A[18)是等价的?Which of the following expressions is equivalent to (A]8)&&(A<18)? A: !(A<8)&&!(A>18) B: !(A<=8)&&!(A>=18) C: !(A>8||A<18) D: A<8||A>18
如下哪个表达式同(A>8)&&(A[18)是等价的?Which of the following expressions is equivalent to (A]8)&&(A<18)? A: !(A<8)&&!(A>18) B: !(A<=8)&&!(A>=18) C: !(A>8||A<18) D: A<8||A>18
如下哪个表达式同A>8 AND A[18是等价的?Which of the following expressions is equivalent to A ] 8 AND A < 18? A: NOT(A<8)AND NOT(A>18) B: NOT(A<=8)AND NOT(A>=18) C: NOT(A>8 OR A<18) D: A<8 OR A>18
如下哪个表达式同A>8 AND A[18是等价的?Which of the following expressions is equivalent to A ] 8 AND A < 18? A: NOT(A<8)AND NOT(A>18) B: NOT(A<=8)AND NOT(A>=18) C: NOT(A>8 OR A<18) D: A<8 OR A>18
-18的绝对值是( ) A: 18 B: -18 C: 8 D: -8
-18的绝对值是( ) A: 18 B: -18 C: 8 D: -8
如下哪个表达式同A>8 AND A<18是等价的? which of the following expressions is equivalent to a> 8 AND A < 18? a. NOT(A<8)and not(a>18) b. NOT(A<=8)and not(a>=18) c. NOT(A>8 OR A<18) d. A: a B: b C: c D: d
如下哪个表达式同A>8 AND A<18是等价的? which of the following expressions is equivalent to a> 8 AND A < 18? a. NOT(A<8)and not(a>18) b. NOT(A<=8)and not(a>=18) c. NOT(A>8 OR A<18) d. A: a B: b C: c D: d
如下哪个表达式同A>8 AND A[18是等价的?a. NOT(A<8)AND NOT(A]18)b. NOT(A[=8)AND NOT(A]=18)c. NOT(A>8 OR A[18)d. A<8 OR A]18 A: a B: b C: c D: d
如下哪个表达式同A>8 AND A[18是等价的?a. NOT(A<8)AND NOT(A]18)b. NOT(A[=8)AND NOT(A]=18)c. NOT(A>8 OR A[18)d. A<8 OR A]18 A: a B: b C: c D: d
如下哪个表达式同A>8 AND A[18是等价的?Which of the following expressions is equivalent to A ] 8 AND A [ 18?a. NOT(A<8)AND NOT(A]18)b. NOT(A[=8)AND NOT(A]=18)c. NOT(A>8 OR A[18)d. A<8 OR A]18 A: a B: b C: c D: d
如下哪个表达式同A>8 AND A[18是等价的?Which of the following expressions is equivalent to A ] 8 AND A [ 18?a. NOT(A<8)AND NOT(A]18)b. NOT(A[=8)AND NOT(A]=18)c. NOT(A>8 OR A[18)d. A<8 OR A]18 A: a B: b C: c D: d
成年人的血量大致相当于本人体重的() A: 7%~8% B: 17%~18% C: 57%~58% D: 70%~80%
成年人的血量大致相当于本人体重的() A: 7%~8% B: 17%~18% C: 57%~58% D: 70%~80%
无公害食品中酸牛奶的酸度(°T)要求达到() A: ≥70 B: ≤70 C: ≥18 D: ≤18
无公害食品中酸牛奶的酸度(°T)要求达到() A: ≥70 B: ≤70 C: ≥18 D: ≤18
8×18÷8×18=( )
8×18÷8×18=( )
18-8钢中18代表_____,8代表_____ A: 18%的铬 B: 18%的碳 C: 8%的镍 D: 8%的铁
18-8钢中18代表_____,8代表_____ A: 18%的铬 B: 18%的碳 C: 8%的镍 D: 8%的铁