设4阶行列式[tex=7.929x4.786]ZpOCMnLTWn2edxCRLh4N3S0Ge1qQtW5wwvt/KpGrsT5wB9zt6llRF2hqErzbsfU1Gl/GOCPB+Kr0MtQcxyVYfQIwaQv1dCmoK2qEGUsyQS341Y0jdAklzylsVMOdSyC6[/tex]，则[tex=9.5x1.214]NCIkt9iygT1uZ1GeH2jfNVr1wsdzQR1SmgpsqEkjh/4=[/tex][tex=0.786x0.643]NhuTNiqjImitwKaHFutGOg==[/tex][input=type:blank,size:4][/input]．
举一反三
- 指出下列电磁辐射所在的光谱区(光速为 [tex=6.429x1.5]1/2H66qmeWP9GenrBNTr2ZhpKiB6H1DdgqtszgSMkTvraIr8dWHn2x3yptmT5H2n[/tex] ) :(1) 波长 [tex=3.714x1.0]StDJXnR43RPspiIKObZzuw9O/dLrVHZu8RJRRAY8kSU=[/tex][input=type:blank,size:4][/input]; (2) 波数 [tex=3.714x1.214]8VzQUldHmwJWvVKk4pz6jk4Am8tzuR2InQyVnni/Bbo=[/tex][input=type:blank,size:4][/input];（3）频率[tex=5.143x1.357]uZDMs7g7gUrO1odXQeZ4JgUgtCwdZjGo6H7tPYh7EJh/4QDeDY5W0+Pdyym88s5X[/tex][input=type:blank,size:4][/input]；(4)波长 [tex=2.929x1.0]fh1smEHXU8S6milYZ79dbP7Y0MTZvW00Ph9YYS+SEPk=[/tex][input=type:blank,size:4][/input]。
- 【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]
- 有代码片段：function f(y) {var x=y*y;return x;} for(var x=0;x< 5;x++) {y=f(x);document.writeln(y);}输出结果是( )。 A: 0 1 2 3 4 B: 0 1 4 9 16 C: 0 1 4 9 16 25 D: 0 1 2 3 4 5
- 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}
- 用铁按矶指示剂法测定(1) [tex=1.643x1.143]UUGzCJdSgqzJ3pJStND1ew==[/tex]和(2) [tex=1.857x1.143]zSM24GHGvbswG99rzKpJkg==[/tex] 时,若不加人硝基苯等保护沉淀,分析结 果将(1)[input=type:blank,size:4][/input](2)[input=type:blank,size:4][/input]