某化学课外小组模拟工业生产制取HNO3,设计下图所示装置,其中a为一个可持续鼓入

题型:填空题

问题:

某化学课外小组模拟工业生产制取HNO3,设计下图所示装置,其中a为一个可持续鼓入空气的橡皮球.

请回答下列问题:

(1)写出装置A中主要反应的化学方程式______.

(2)检查装置A的气密性:先将A中导管下端浸入水中,再______.

(3)已知1molNO2与液态水反应生成HNO3溶液和NO气体放出热量45.5kJ,写出该反应的热化学方程式______,该反应是一个可逆反应,欲要提高NO2的转化率,可采取的措施是______

A.升高温度      B.降低温度        C.增大压强       D.减小压强

(4)实验结束后,关闭止水夹b、c,将装置D浸入冰水中,现象是______.

(5)装置C中浓H2SO4的作用是______.

(6)请你帮助该化学小组设计实验室制取NH3的另一方案______(用化学反应方程式表示).

考点:设计实验方案及探究实验工业制取硝酸
题型:填空题

Confidence is very important in daily life. It can help you to develop a healthy attitude (态度). A study shows that the people who are more confident are much happier. They can have more chance to make themselves successful. Here are some suggestions about how to be more confident.

Speak loud  When you are not confident, you can't do well what you want to do. You speak in a voice so low that other people can hardly hear you. Try to speak _______(1) enough so that people can hear you clearly. The high voice can _______(1) you become more confident.

Play sports .Physical exercise makes you tired but completely relaxed. A strong body helps you be full of confidence.(2)

Encourage yourself  Write down a list of things you did during the day to see how many things you have done well. Did you finish your homework? Did you tell a joke that made everybody laugh? Give yourself praise for the good things you've done.

Pick up a hobby.If you like singing, sing as much as you can. In some ways, a hobby can make you outstanding. And it will make you happy and confident.

Get rid of (消除) fear  Fear comes along with failure (失败). But it's easy to overcome (克服) if you know that failure is part of your life. Don't hide your head just because you said something stupid last time. Try to start again and believe you can do better.

小题1:在(1)处横线上填入适当的词。___________ ___________

小题2:将(2)处划线部分翻译成中文。______________________________________________

小题3:回答问题How many suggestions can help you to be more confident?   

______________                                              

小题4:找出并写出所给句子的同义句。

If singing is your favourite, you can sing as often as possible.

                                                            

小题5:找出并写出最能表达该短文主题的句子。

                                                            

题型:填空题

多系统器官衰竭的发生诱因中以下哪一种不存在?()。

A.感染

B.输液过多

C.单核吞噬细胞系统功能降低

D.免疫功能降低

E.吸氧浓度过高

题型:填空题

(1).根细长圆柱形,表面灰黄色或淡褐色,质硬脆,断面有多数黄白色小点排成数轮同心环()
(2).含蒽醌类衍生物的是()
(3).于紫外灯下断面显黄白色荧光的是()
(4).药材短粗,皮棕红色,断面纤维性强,味甘,后苦麻刺舌的是()

A.牛膝

B.大黄

C.两者都对

D.两者都不对

题型:填空题

* * 状腺癌有颈淋巴转移宜选择的手术方式

A.甲状腺全切除
B.甲状腺大部切除
C.患侧甲状腺及峡部全切除,对侧腺体大部切除不加颈淋巴结清扫
D.患侧甲状腺及峡部全切除,对侧腺体大部切除加颈淋巴结清扫

题型:填空题

提高医疗质量的思想保障是()

A.医疗技术

B.医疗设备

C.规章制度

D.经济效益

E.医德医风

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