肺动脉
A. 肺动脉中含动脉血
B. 左肺动脉较长,向左行至左肺门
C. 右肺动脉向右经升主动脉与上腔静脉之间达右肺门
D. 肺动脉于全长被心包所包围
E. 在肺动脉干分叉处的稍右侧有动脉带连于主动脉弓下缘
An internet is a combination of networks connected by (1). When a datagram goes from a source to a (2), it will probably pass many (3) until it reaches the router attached to the destination network. A router receives a (4) from a network and passes it to another network. A router is usually attached to several networks. When it receives a packet, to which network should it pass the packet? The decision is based on optimization: Which of the available (5) is the optimum pathway?空白(5)处应选择()
A. pathways
B. routers
C. diagrams
D. calls
女性,45岁,反复发作腹泻10年,多于工作紧张时发生,表现为晨起腹泻3~4次/日,伴便前腹痛,便后缓解,体重无变化,近由于变换工作上述症状加重,大便5~6次日,有黏液,述自服黄连素有效,停药反复。(1)初步诊断是什么?(2)该病人除结肠镜检查外还应进行什么检查以明确诊断?(3)IBS的诊断标准是什么?
女性,40岁,大便一天4~5次5年余,多于饭后,精神紧张时发生,便前多出现腹痛,便后缓解。大便为黄稀便或水便,无夜间腹泻,血便或消瘦。该患者治疗上可采用()
A. 小檗碱(黄连素)
B. 柳氮磺胺吡啶
C. 地芬诺酯(复方苯乙哌啶)
D. 氟哌酸
E. 甲硝唑(灭滴灵)