试题与答案

在受灾现场实施预检分诊时,需要使用红色分类的情况是()A、面部烧伤者 B、张力性气胸C

题型:单项选择题

题目:

在受灾现场实施预检分诊时,需要使用红色分类的情况是()

A、面部烧伤者

B、张力性气胸

C、腿部骨折行走困难者

D、上肢皮肤裂伤流血

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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(14分)实验室用燃烧法测定某固体有机物A的分子组成,测定装置如图(铁架台、铁夹、酒精灯等未画出):

取17.1 g A放入装置中,通入过量O2燃烧,生成CO2和H2O,请回答下列有关问题:

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(2)C装置的作用是__________________________________________;

D装置的作用是_____________________________________________。

(3)通过该实验,能否确定A中是否含有氧原子?________。

(4)若A的摩尔质量为342 g/mol,C装置增重9.99 g,D装置增重26.4 g,则A分子式为____________。

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