Bt Cotton is
举一反三
- Which of the following is NOT the difference between Bt cotton and common cotton A: Bt cotton is stronger than common cotton. B: Bt cotton yields more than common cotton. C: Bt cotton needs less pesticides than common cotton. D: Bt cotton is harm to cotton bollworms.
- P密封与BT相比，P密封圈的橡胶材质硬度较高，加之金属骨架的阻挡作用，使得P密封适宜于更高的压力场合。
- 以下程序是二叉链表树中序遍历的非递归算法,请填空使之完善。二叉树链表的结点类型的定义如下:typedef struct node /*C语言/{char data; struct node *lchild,*rchild;}*bitree;void vst(bitree bt) /*bt为根结点的指针*/{ bitree p; p=bt; initstack(s); /*初始化栈s为空栈*/while(p || !empty(s)) /*栈s不为空*/if(p) { push (s,p);____; } /*P入栈*/else { p=pop(s); printf(“%c”,p->;data); ____; } /*栈顶元素出栈*/}
- 下列哪一个选项属于标题标签 A: <;bt>; B: <;h1>; C: <;img>; D: <;p>;
- 以下程序是二叉链表树中序遍历的非递归算法,请填空使之完成(注意:语句中不要留空格)。二叉树链表的结点类型的定义如下:typedef struct node { char data; struct node *lchild,*rchild;}*bitree;void visit(bitree bt) /*bt为根结点的指针*/ {bitree p; p=bt; initstack(s); /*初始化栈s为空栈*/ while( p || !empty(s)) /*栈s不为空*/ if(p) { push (s,p);/* p 入栈*/ (1)______; } else { p=pop(s);/*栈顶元素出栈*/ printf(“%c”,p->data); p=p->rchild; }}