大卫是一位资深CEO，他打定主意去一家待遇最好的公司。惠众公司和康拓公司有意聘用他，

后颅窝手术中，为避免损伤椎动脉，切开枕骨大孔后缘一般限制在中线旁（）。

A.0.5cm内

B.1.0cm内

C.2.0cm内

D.1.5cm内

E.2.5cm内

下列出现的现象中，不可遗传的是（　　）

A．豌豆的皱粒

B．一对夫妇生了一个左撇子女儿

C．经常在野外工作的人皮肤变黑

D．红色的玫瑰花

假设有向图采用邻接表表示法，其定义如下：
typedef struct{
VertexNode adjlist[MaxVertexNum];
int n,e; //图的当前顶点数和弧数
}ALGraph //邻接表类型
其中顶点表结点VertexNode结构为：

边表结点EdgeNode结构为：
下列算法f33的功能是，对以邻接表表示的有向图进行拓扑排序。
(1)阅读算法f33，并在空缺处填入合适的内容，使其成为一个完整的算法；
(2)对于如图所示的邻接表，将执行算法f33后的topo[]结果填入给定的数组中。
void f33(ALGraph G,int topo []){
int i,j,k,count=0;
int indegree[MaxVertexNum];
EdgeNode*p;//p为指向边表结点的指针
Queue Q;//Q为队列
FindIndegree(G,indegree);//求各顶点的入
度，并置于入度向量indegree
InitQueue(&Q);
for(i=0;i＜G.n;i++)
if(!indegree[i])EnQueue(&Q,i);
while(!QueueEmpty(&Q)){
j=[ ① ];
topo[j]=++count
for(p=G.adjlist[j].firstedge;p;p=p—＞next){
k=p—＞adjvex;
if(!(--indegree[k]))[ ② ];
}
}
if(count＜G.n)printf("\n图G中存在有环路");
}

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有消化道溃疡史者禁用（）

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