连通图
参考答案:
在无向图中,如果对于图中任意两个顶点vi,vj∈V,vi和vj都是连通的,则称该无向图是连通图。
阅读下面的短文,然后将划线部分的句子译成汉语或英语。
Mr. and Mrs. Smith come from Sydney(悉尼).小题1:They teach English in a school in China. They like their work. 小题2:They have a son Jim and a daughter Sue. They are all in China now. Mr. Smith can speak Chinese. He likes swimming and reading. Mrs. Smith likes swimming in the afternoon and cooking(做饭).小题3: Jim 和Sue喜欢打网球。They often play tennis with Chinese boys and girls.
Jim’s uncle, Mark, works on a farm(农场)near Sydney. 小题4:He likes swimming, too. He wants to work in China. 小题5:但是他不会说中文。 So he is still(仍然) there and goes to Chinese classes every week.
急性腹膜炎伴有休克患者宜采用的体位是
A.头低脚高位B.头抬高20°~30°,脚抬高15°~20°C.半卧位D.平卧位E.侧卧位