以[tex=2.929x1.0]NlefGGJF2e6P2jYOHTb2XA==[/tex] 滴定相同浓度的金属离子[tex=1.0x1.0]/4LSvKfNeQWJ+IvWbbbjdA==[/tex], 已知滴定终点时[tex=11.286x1.5]PJM579BE76MeVTaYeN0GTIcIs2G9X2wQwGYFYrED7aYhMqVzbQEp3b3wAlzvII4TmKbqE2UZD6EKL4I72v3snAIO1otDBjSD0UyLL/c2MP5dsNTO19eSj3RsC34PDcUb[/tex].若要求终点误差为0. 1%, 则被测金属离子[tex=1.0x1.0]/4LSvKfNeQWJ+IvWbbbjdA==[/tex] 的最低起始浓度为
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未知类型:{'options': ['[tex=4.571x1.357]5uMK7aiecx3gzSur6X05t13QrOpXOWdBCZMtNuwKIOmZU9hij4Q9OKQEuQZR00pa[/tex]', '[tex=4.571x1.357]l5uOsGhZRHL4dS7msSdbEpqTWzF4jAGoMV9A3tOqfM6YBWO/s0H79Z57oe0gNRaH[/tex]', '[tex=5.071x1.357]W8BLfZY0nD7XWRA2u5WjbhzmIpxIp7vCdNbRoT/nYVSdwISEd23N2B1cWmoxCnc3[/tex]', '[tex=5.071x1.357]TlxK5VVhss+JQpPqeMZdo99CCCF902E0P5+orhd5A1gyi1ZV9MlzWE0kmN+EX58H[/tex]'], 'type': 102}
举一反三
- 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']
- 采用基2时间抽取FFT算法流图计算8点序列的DFT,第一级的数据顺序为 A: x[0],x[2],x[4],x[6],x[1],x[3],x[5],x[7] B: x[0],x[1],x[2],x[3],x[4],x[5],x[6],x[7] C: x[0],x[4],x[2],x[6],x[1],x[5],x[3],x[7] D: x[0],x[2],x[1],x[3],x[4],x[6],x[5],x[7]
- 采用基2频率抽取FFT算法计算点序列的DFT,以下()流图是对的。 A: x[0],x[1],x[2],x[3],x[4],x[5],x[6],x[7] B: x[0],x[2],x[4],x[6],x[1],x[3],x[5],x[7] C: x[0],x[2],x[1],x[3],x[4],x[6],x[5],x[7] D: x[0],x[4],x[2],x[6],x[1],x[5],x[3],x[7]
- 【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]