Each flower of rape has 4 calyxes, 4 petals and ( ) stamens.
A: 4
B: 5
C: 6
D: 2
A: 4
B: 5
C: 6
D: 2
举一反三
- Each flower of rape has 4 calyxes, 4 petals and ( ) stamens. A: 4 B: 5 C: 6 D: 2
- How many pistils does each rape flower have? A: 1 B: 2 C: 3 D: 4
- 【单选题】A=[3 4 5;4 2 6];B=[4 2 7];C=[A;B] 运行的结果为 A. [3 4 5 4 2 6 4 2 7] B. [3 4 4;4 2 2;5 6 7] C. [3 4 5;4 2 6;4 2 7] D. [4 2 7;3 4 5;4 2 6]
- 下面是关于脂肪酸氧化的部分反应步骤, A: (2)(4)(1)(3)(5)(6) B: (4)(5)(2)(6)(3)(1) C: (3)(2)(1)(6)(4)(5) D: (4)(2)(3)(1)(6)(5) E: (5)(2)(6)(3)(1)(4)
- 已知a=[1 2 3; 4 5 6; 7 8 9],执行命令:a([3,1],:)=a([1,3],:),a将变为( )。 A: [4 5 6;4 5 6;4 5 6] B: [7 8 9;4 5 6;1 2 3] C: [2 2 2;5 5 5;8 8 8] D: [3 2 1;6 5 4;9 8 7]