【简答题】磷在自然界常以难溶于水的磷酸盐如Ca 3 (PO 4 ) 2 等形式存在。它的单质和化合物有着广泛的应用。 (1)红磷P(s)和Cl 2 (g)发生反应生成PCl 3 (g)和PCl 5 (g)。反应过程和能量关系如图所示(图中的△H表示生成1mol产物的数据)。 请回答问题: ①PCl 5 分解成PCl 3 和Cl 2 的热化学方程式是 。 ②P和Cl 2 分两步反应生成1 mol PCl 5 ...
【单选题】1岁小儿,人工喂养,因食欲差、消瘦来诊,体检:精神可,体重7公斤,身高73厘米,腹部皮下脂肪层<0.4厘米,临床诊断为中度营养不良。若患儿早起出现头晕、冷汗、面色苍白、神志不清多提示( )
【单选题】关于外阴白色病变,哪项正确?
A.
外阴营养不良的外阴组织中发现有神经血管营养失调
C.
硬化苔癣型营养不良可能与局部潮湿和对外来刺激反应过度有关
E.
在硬化性苔癣型营养不良的基础上有继发癌变的危险
【单选题】为防止脑出血患者住院期间出现营养不良,下列护理措施中错误的是:
【简答题】Waste can be seen everywhere in the school. Some students ask for more food 26 they can eat and others often forget 27 the light when they leave the classroom. Waste can 28 a lot of problems. Althoug...
【简答题】选词填空(共10小题,每小题1分,满分10分) 小题1:Don’t be so __________! The bus will be here soon. 小题2:He worked out the problem yesterday. We are proud of him. 小题3: in the coming exam, students are busy revising their l...
【单选题】Part A Directions: You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer ― A, B, C or D, and mark it in your test booklet. You...
A.
Air China Flight 985 on the 26th.
B.
Air China Flight 985 on the 27th.
C.
Air China Flight 985 on the 28th.
D.
Air China Flight 985 on the 25th
【简答题】China will continue to pursue a【26】monetary policy, and seek refinements in the conduct of monetary policy by relying on【27】policy instruments. First, open market operation will be expanded, and the q...