In a spreadsheet, a cell is defined as the A: intersection of a table and a row B: intersection of a table and a column C: intersection of a row and column D: intersection of a column and a record

intersection

Two events are mutually exclusive if( ) A: the<br/>probability of their intersection is 1. B: they have no sample points in common. C: the<br/>probability of their intersection is 0.5. D: the<br/>probability of their union is 1 and they have no sample points in<br/>common.

已知s1和s2是两个集合,则返回结果必然为True的选项包括（） A: s1.symmetric_difference(s2).issubset(s1) B: s1.symmetric_difference(s2).issuperset(s1) C: s1.intersection(s2).issubset(s1) D: s1.intersection(s2).issubset(s2)

The waterplane area is described as the intersection of the surface of the water in which a vessel floats and the（）.

The intersection of two mutually exclusive events must always be equal to 0.

“十字路口”的英文是： A: street B: intersection C: modern

异步电动机处于电动机状态，发电机状态和电磁制动状态下的转差率s分别为（）。 A:  0＜s＜1， s＜0， s＞1 B:  −1＜s＜1， s＜−1， s＞1 C:  0＜s＜1， s＞1， s＜0 D:  −1

下列哪一种方法可以得到RDD(('a',1))（）。 A: RDD(('a',1),('b',1)) union RDD(('a',1),('b',1)) B: RDD(('a',1),('b',1)) join RDD(('a',1),('b',1)) C: RDD(('a',1),('b',1)) intersection RDD(('a',1),('d',1)) D: RDD(('a',1),('b',1)) subtract RDD(('a',1),('b',1))

单位阶跃函数拉氏变换 A: 1/s B: 1 C: 1/s/s D: 1/s/s/s