“[ 2*x+2 for x in range(5) ]”生成的列表是( )。 A: [2, 4, 6, 8, 10] B: [0, 2, 4, 6, 8] C: [1, 2, 3, 4, 5] D: [0, 1, 2, 3, 4]
“[ 2*x+2 for x in range(5) ]”生成的列表是( )。 A: [2, 4, 6, 8, 10] B: [0, 2, 4, 6, 8] C: [1, 2, 3, 4, 5] D: [0, 1, 2, 3, 4]
set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为? A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为? A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
>>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
>>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
【单选题】如图示代码,下面哪个是正确的输出结果 A. 0 1 2 3 4 5 B. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 C. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 D. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5
【单选题】如图示代码,下面哪个是正确的输出结果 A. 0 1 2 3 4 5 B. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 C. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 D. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5
有六组量子数: (1) n=3,l=1,m=-1;(2) n=3,l=0,m=0;(3) n=2,l=2,m=-1;(4) n=2,l=1,m=0;(5) n=2,l=0,m=-1;(6) n=2,l=3,m=2 其中正确的是( )。 A: (1)(3)(5) B: (2)(4)(6) C: (1)(2)(4) D: (1)(2)(3)
有六组量子数: (1) n=3,l=1,m=-1;(2) n=3,l=0,m=0;(3) n=2,l=2,m=-1;(4) n=2,l=1,m=0;(5) n=2,l=0,m=-1;(6) n=2,l=3,m=2 其中正确的是( )。 A: (1)(3)(5) B: (2)(4)(6) C: (1)(2)(4) D: (1)(2)(3)
如下代码运行后的输出结果是()。 ls = list(range(6)) ls.append(8) print(ls) A: [1, 2, 3, 4, 5, 6, 8] B: [0, 1, 2, 3, 4, 5, 8] C: [8, 1, 2, 3, 4, 5, 6] D: [8, 0, 1, 2, 3, 4, 5]
如下代码运行后的输出结果是()。 ls = list(range(6)) ls.append(8) print(ls) A: [1, 2, 3, 4, 5, 6, 8] B: [0, 1, 2, 3, 4, 5, 8] C: [8, 1, 2, 3, 4, 5, 6] D: [8, 0, 1, 2, 3, 4, 5]
【单选题】设X为连续型随机变量, 其概率密度: f(x)=Ax2, x∈(0,2); 其它为0. 求(1)A=(); (2) 分布函数F(x)=(); (3) P{1<X<2} (10.0分) A. (1)3/8; (2)x<0, F(x)=0; 0≤x<2, F(x)=1/8x³; x≥2, F(x)=1; (3) 7/8 B. (1)5/8; (2)x<0, F(x)=0; 0≤x<2, F(x)=1/8x³; x≥2, F(x)=0 (3) 1/8
【单选题】设X为连续型随机变量, 其概率密度: f(x)=Ax2, x∈(0,2); 其它为0. 求(1)A=(); (2) 分布函数F(x)=(); (3) P{1<X<2} (10.0分) A. (1)3/8; (2)x<0, F(x)=0; 0≤x<2, F(x)=1/8x³; x≥2, F(x)=1; (3) 7/8 B. (1)5/8; (2)x<0, F(x)=0; 0≤x<2, F(x)=1/8x³; x≥2, F(x)=0 (3) 1/8
在下列六组量子数中,正确的是① n=3,l= 1,m=-1 ② n = 3,l= 0,m = 0③ n = 2,l= 2 ,m=-1 ④ n = 2, l = 1 ,m = 0 ⑤ n = 2,l = 0,m =-1 ⑥ n= 2,l = 3 , m= 2 A: (1),(2),(4) B: (2),(4),(6) C: (1),(2),(3) D: (1),(3),(5)
在下列六组量子数中,正确的是① n=3,l= 1,m=-1 ② n = 3,l= 0,m = 0③ n = 2,l= 2 ,m=-1 ④ n = 2, l = 1 ,m = 0 ⑤ n = 2,l = 0,m =-1 ⑥ n= 2,l = 3 , m= 2 A: (1),(2),(4) B: (2),(4),(6) C: (1),(2),(3) D: (1),(3),(5)
【单选题】Which of the following matrices does not have the same determinant of matrix B: [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -1, 0, -9,-5] A. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 0; -1, 0, -9, -5] B. [1, 3, 0, 2; -2, -5, 7, 4; 1, 0, 9, 5; -1, 0, -9, -5] C. [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -3, -5, -2, -1] D. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 1; -1, 0, -9, -5]
【单选题】Which of the following matrices does not have the same determinant of matrix B: [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -1, 0, -9,-5] A. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 0; -1, 0, -9, -5] B. [1, 3, 0, 2; -2, -5, 7, 4; 1, 0, 9, 5; -1, 0, -9, -5] C. [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -3, -5, -2, -1] D. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 1; -1, 0, -9, -5]
写出下列各种情况的合理量子数。 (1)n = ,l = 2, m = 0, ms = +1/2 (2)n = 3,l = ,m = 1,ms = -1/2 (3)n = 4,l = 3,m = 0,ms = (4)n = 2,l = 0,m = ,ms = +1/2 (5)n = 1,l = ,m = 0 ,ms =
写出下列各种情况的合理量子数。 (1)n = ,l = 2, m = 0, ms = +1/2 (2)n = 3,l = ,m = 1,ms = -1/2 (3)n = 4,l = 3,m = 0,ms = (4)n = 2,l = 0,m = ,ms = +1/2 (5)n = 1,l = ,m = 0 ,ms =