张某，男，19岁 无明显诱因出现晨起颜面水肿一月余，血压100/72mmHg,心肺正常，尿蛋白（++++），尿红细胞0~1/Hp。血浆清蛋白30g/L。该病人最可能患了下列何种疾病
A. 急性肾小球肾炎;
B. 急进性肾小球肾炎;
C. 肾病综合征;
D. 慢性肾小球肾炎;
E. 慢性肾衰
In which of the following cases, a simple graph G(p,q) must be a connected graph
A. q=8，p=6
B. q=4，p=4
C. q=5，p=5
D. q=7，p=6
Which of the following statements about graph connectivity are true:
A. The necessary and sufficient conditions for G is connected: G has only one connected component.
B. The necessary and sufficient conditions for u and v are connected: u and v are in the same connected component.
C. If there are exactly two vertices of odd degrees in the graph, they are connected.
D. All the connected componentof a graph make up of one of its partitions.
If there are two different walks from u to v in simple graph G, there must be a loop in the graph.
A. 对
B. 错
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