【单选题】【消耗次数:1】
正 常 人 消 化 道 内 铁 吸 收 效 率 最 高 的 部 位 是
十二指肠及空肠上部
空肠
回肠
直肠
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相关题目
【单选题】 胃十二指肠消化性溃疡穿孔最好发部位是()
①  十二指肠前壁
②  十二指肠球部后壁
③  胃小弯
④  胃大弯
⑤  胃底
【单选题】 胃和十二指肠溃疡好发于
①  10~20岁
②  20~30岁
③  20~50岁
④  40~60岁
⑤  30~50岁
【单选题】 胃十二指肠溃疡穿孔会导致
①  阵发性剑突下钻顶样疼痛伴呕吐
②  突发上腹剧痛伴腹膜刺激征
③  外伤后剧烈腹痛伴休克
④  上腹部绞痛伴畏寒发热
⑤  腹痛、呕吐、便秘、肠鸣音亢进或消失
【单选题】 十二指肠溃疡最好发于( )
①  胃小弯近幽门部
②  十二指肠降部
③  十二指肠球部
④  胃体部
⑤  十二指肠下段
【单选题】 损害胃、十二指肠粘膜因素中不妥的是
①  非甾体类药物
②  吸烟
③  前列腺素
④  刺激性饮食
【单选题】 十二指肠溃疡最好发于
①  胃小弯近幽门部
②  十二指肠降部
③  十二指肠球部
④  胃体部
【单选题】 十二指肠溃疡最好发于
①  十二指肠各段
②  十二指肠降部
③  十二指肠球部
④  升十二指肠部
⑤  十二指肠下段后壁
【单选题】 十二指肠大乳头开口于()
①  十二指肠降部外侧壁
②  十二指肠降部后内侧壁
③  十二指肠降部前内侧壁
④  十二指肠球部
⑤  十二指肠升部
【单选题】 胃十二指肠溃疡外科手术的绝对适应证是()
①  溃疡病穿孔
②  应激性溃疡
③  瘢痕性幽门梗阻
④  胃后壁溃疡
⑤  溃疡并出血
【单选题】 肝十二指肠韧带内的结构不包括
①  胆总管
②  肝门静脉
③  胰管
④  肝固有动脉
⑤  神经
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①  discussion
②  suggestion
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①  at
②  in
③  on
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【单选题】 阅读理解:阅读下列短文,回答文后问题,选择最佳答案Trees mainly serve man in three important ways: They provide him with wood and other products; they provide him shade; and they help to prevent droughts and floods.Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important.In his eagerness to make money from trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And besides, he is usually too careless to plant and look after new trees. So the forests slowly disappear.This does not only mean that man will have fewer trees. The results are even more serious: for where there are trees, their roots break up soil allowing the rain to sink in and also bind(固定) the soil, thus preventing it from being washed away easily;but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When the top-soil is gone, nothing remains but worthless desert.Two thousand years ago,a rich and powerful country cut down its trees to build warships, with which to gain itself an empire.It set up the empire, but, without its trees, its soil became poor and grew weak. When the empire fell to pieces, the home country found itself faced by floods and starvation(饥荒).2. In many places forests slowly disappear because __________.
①  A. many trees have been cut down by man
②  B. new trees are not well looked after
③  C. man has not paid enough attention to planting trees
④  D. all the above
【单选题】 _________ people have a photographic memory.
①  No
②  None
③  Some
④  All
【单选题】 Rowland Hill was the first to_________ a proposal to use stamps.
①  put forward
②  put up
③  put away
④  put on
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①  boring
②  disturbing
③  frustrating
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【单选题】 Your long-term memory_________ everythingthat you remember.
①  concludes
②  conveys
③  closes
④  contains
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②  客观需求曲线
③  弯折的需求曲线
④  线性需求曲线
【多选题】 在长期中,下列成本中哪些是存在的( )
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②  平均成本
③  机会成本
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④  企业生产有差别的产品