定义一个集合数据对象,错误的是: A: x = { 201, ’flg’, 20.3} B: x = ( 200, ’flg’, 20.3) C: x = [ 201, ’flg’, 20.3 ] D: x = {‘flg’ : 20.3}
定义一个集合数据对象,错误的是: A: x = { 201, ’flg’, 20.3} B: x = ( 200, ’flg’, 20.3) C: x = [ 201, ’flg’, 20.3 ] D: x = {‘flg’ : 20.3}
两浮点数 x=0.1101 ´210 , y=(0.1011) ´201, 求x+y。
两浮点数 x=0.1101 ´210 , y=(0.1011) ´201, 求x+y。
【单选题】You can find him in__ . A. Room 201 B.201 Room C. the Room 201 D. the 201 Room A. Room 201 B. 201 Room C. the Room 201 D. the 201 Room
【单选题】You can find him in__ . A. Room 201 B.201 Room C. the Room 201 D. the 201 Room A. Room 201 B. 201 Room C. the Room 201 D. the 201 Room
【单选题】Supposethepriceindexwas100in2014,109in2015,andtheinflationratewaslowerbetween2015and2016thanitwasbetween2014and2015.Thismeansthat A. th e pric e inde x i n 201 6 wa s lowe r tha n 109.0 B. th e pric e inde x i n 201 6 wa s lowe r tha n 118.9 C. th e pric e inde x i n 201 6 wa s lowe r tha n 118.0 D. th e inflatio n rat e betwee n 201 5 an d 201 6 wa s lowe r tha n 1.0 9 percent
【单选题】Supposethepriceindexwas100in2014,109in2015,andtheinflationratewaslowerbetween2015and2016thanitwasbetween2014and2015.Thismeansthat A. th e pric e inde x i n 201 6 wa s lowe r tha n 109.0 B. th e pric e inde x i n 201 6 wa s lowe r tha n 118.9 C. th e pric e inde x i n 201 6 wa s lowe r tha n 118.0 D. th e inflatio n rat e betwee n 201 5 an d 201 6 wa s lowe r tha n 1.0 9 percent
表达式 (x=100,y=200)+!(0 A: 100 B: 200 C: 101 D: 201
表达式 (x=100,y=200)+!(0 A: 100 B: 200 C: 101 D: 201
已知:两浮点数x = 0.1101×210,y = 0.1011×201 (指数为二进制数) 求:x + y,写出计算过程
已知:两浮点数x = 0.1101×210,y = 0.1011×201 (指数为二进制数) 求:x + y,写出计算过程
函数\( f\left( x \right) = {x^2} - { { 54} \over x} \)在\( ( - \infty ,0) \)上的最小值为_______ . ______
函数\( f\left( x \right) = {x^2} - { { 54} \over x} \)在\( ( - \infty ,0) \)上的最小值为_______ . ______
设随机变量X的方差存在,则 A: [img=205x46]180398df8db3c08.jpg[/img] B: [img=207x51]180398df9888bd1.jpg[/img] C: [img=201x54]180398dfa3efc73.jpg[/img] D: [img=206x53]180398dfae7b156.jpg[/img]
设随机变量X的方差存在,则 A: [img=205x46]180398df8db3c08.jpg[/img] B: [img=207x51]180398df9888bd1.jpg[/img] C: [img=201x54]180398dfa3efc73.jpg[/img] D: [img=206x53]180398dfae7b156.jpg[/img]
设随机变量X的方差存在,则 A: [img=205x46]1803a7e70651e53.jpg[/img] B: [img=207x51]1803a7e71120b83.jpg[/img] C: [img=201x54]1803a7e71c653e8.jpg[/img] D: [img=206x53]1803a7e727682b0.jpg[/img]
设随机变量X的方差存在,则 A: [img=205x46]1803a7e70651e53.jpg[/img] B: [img=207x51]1803a7e71120b83.jpg[/img] C: [img=201x54]1803a7e71c653e8.jpg[/img] D: [img=206x53]1803a7e727682b0.jpg[/img]
设随机变量X的方差存在,则 A: [img=205x46]1803cc853d25e99.jpg[/img] B: [img=207x51]1803cc85472b0f4.jpg[/img] C: [img=201x54]1803cc8551c0b81.jpg[/img] D: [img=206x53]1803cc855cf353e.jpg[/img]
设随机变量X的方差存在,则 A: [img=205x46]1803cc853d25e99.jpg[/img] B: [img=207x51]1803cc85472b0f4.jpg[/img] C: [img=201x54]1803cc8551c0b81.jpg[/img] D: [img=206x53]1803cc855cf353e.jpg[/img]