VitB12是许多代谢过程所必需的,下列哪种情况不会引起其缺乏A.慢性胃炎引起的胃酸 发布时间:2017-06-20 02:12 │ 来源:www.tikuol.com 题型:单项选择题 问题: VitB12是许多代谢过程所必需的,下列哪种情况不会引起其缺乏A.慢性胃炎引起的胃酸缺乏B.胃壁细胞的自身免疫性破坏C.外科切除空肠D.外科切除回肠
题型:单项选择题 HOT MOVIES IN THEATERSFlying swords of Dragon GateIt’s a great action movie with a lot of stars like Jet Li and Zhou Xun. It’s based on the story of 1992’s New Dragon Gate Inn, a work by Tsui Hark. Ticket: ¥60 (Student Ticket: ¥30)The Flowers of WarDo you like Zhang Yimou? He likes to play big. His new movie The Flowers of War is China’s most expensive film yet.The film is also aimed to take the international market. It will be on in New York, Los Angeles and San Francisco on December 23.The story begins in the rubble* of Nanjing after the fall of the city to the Japanese on December 13, 1937.Ticket: ¥90 (Student Ticket: ¥45)小题1:What kind of movies is Flying swords of Dragon Gate?A.A documentary.B.An action movie.C.A thriller.D.A comedy小题2:Where does the story of the movie The Flowers of War happen?A.New YorkB.Los AngelesC.San FranciscoD.Nanjing小题3:Lindy is a middle school student. She wants to see The Flowers of War with her father. How much do they need to pay?A.¥90B.¥45C.¥180D.¥135 查看答案
题型:单项选择题 某校高中历史兴趣小组在探究“古代中国经济发展及其对外贸易”课题时,得出以下部分结论。你认为其中不正确的是 [ ]A.刀耕火种是原始农业的主要耕作方式 B.东汉时期出现了水力鼓风冶铁的新技术 C.唐朝能够制作精美的青瓷和白瓷 D.清代开始实行海禁,阻碍对外贸易发展 查看答案
题型:单项选择题 有一硝酸盐晶体,分子式为M(NO3)x·nH2O,经测定其摩尔质量为242g/mol。取1.21g此晶体溶于水,配制成100mL溶液。将其置于电解池中用惰性材料为电极进行电解。经测定,当有0.01 mol电子通过电极时,溶液中全部金属离子恰好在阴极上析出,电极增重0.32g。(1)1.21 g此盐晶体的物质的量是多少?x值是多少?(2)求M的相对原子质量和n值。 查看答案