写出下列变化中的[tex=4.571x1.286]gMdV+4uyIbsUxVGVj8kiyWFij4/YUEmA4UC12uTt2+Y=[/tex]的结构式。[tex=0.786x1.0]ri6gmnf1+J9dGqG5/1sV6A==[/tex]和[tex=0.714x1.0]YiLkHgl7MlxE+QjUplQUKA==[/tex] 互为旦构体:[tex=3.714x1.214]o7lNV6h7EnTRc34Vu1IgqFhiXB0dhJU729TmSKsqT10=[/tex]。[img=458x113]17a4d9db39b0a69.png[/img]
举一反三
- 写出下列变化中的[tex=4.429x1.214]v5hx5rANwsT9UyJrbLEOtA==[/tex]的结构式。[img=686x151]17b34b081cbb6e7.png[/img][br][/br][tex=0.786x1.0]ri6gmnf1+J9dGqG5/1sV6A==[/tex]和[tex=0.714x1.0]J/aA9EEo0KmJFnWWfX7LmQ==[/tex]互为异构体:[tex=3.714x1.214]If7RTHO3cn5piSr4Y79t7w==[/tex]
- 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']
- 下面是图的拓扑排序的是？(多选)[img=340x240]1802faef6ebcc2a.png[/img] A: 2 8 0 7 1 3 5 6 4 9 10 11 12 B: 2 8 7 0 6 9 11 12 10 1 3 5 4 C: 8 2 7 3 0 6 1 5 4 9 10 11 12 D: 8 2 7 0 6 9 10 11 12 1 3 5 4
- 若要将一个长度为N=16的序列x(n)重新位倒序,作为某一FFT算法的输入,则位倒序后序列的样本序号为( )。 A: x(15), x(14), x(13), x(12), x(11), x(10), x(9), x(8), x(7), x(6),<br/>x(5), x(4), x(3), x(2), x(1), x(0) B: x(0), x(4), x(2), x(6), x(1), x(5), x(3), x(7), x(8), x(12), x(10),<br/>x(14), x(9), x(13), x(11), x(15) C: x(0), x(2), x(4), x(6), x(8), x(10), x(12), x(14), x(1), x(3), x(5),<br/>x(7), x(9), x(11), x(13), x(15) D: x(0), x(8), x(4), x(12), x(2), x(10), x(6), x(14), x(1), x(9), x(5),<br/>x(13), x(3), x(11), x(7), x(15)