"The complement of a product of variables is equal to the sum of the complements of each variable " is a statement of DeMorgen's theorem
举一反三
- The complement of a variable is always一个变量的反变量总是 A: 0 B: 1 C: equal to the variable等于这个变量 D: the inverse of the variable等于这个变量的反
- In the rank sum test of ordinal variables, the average rank of each category is the lower bound of the corresponding range of rank.
- MySQL中查询系统变量的命令是（ ）。 A: show variables B: show variable C: check variables D: check variable
- When we utilize tabular method for transportation problems, the criterion for the optimal solution is ( ). A: the test numbers of non-basic variables are greater than or equal to 0 B: the test numbers of basic variables are less than or equal to 0 C: the test numbers of basic variables are greater than or equal to 0 D: the test numbers of non-basic variables are less than or equal to 0
- In the rank sum test of ordinal variables, the average rank of each category is the lower bound of the corresponding range of rank. A: 正确 B: 错误