某校研究性学习小组,设计如下装置来验证浓硫酸与木炭在加热条件下的产物中含有SO2

题型:填空题

问题:

某校研究性学习小组,设计如下装置来验证浓硫酸与木炭在加热条件下的产物中含有SO2和CO2.同学们查阅资料得知二氧化硫可使酸性高锰酸钾溶液褪色,化学方程式为:2KMnO4+5SO2+2H2O=K2SO4+2MnSO4+2H2SO4

(1)写出浓硫酸与木炭在加热的条件下化学反应方程式:______

(2)实验时,反应产生的气体应从______端通入装置.(用“a”或“b”填空)

(3)A瓶的实验现象是______,B瓶溶液的作用是______.

(4)要证明产物中含有CO2的实验现象是:C中品红溶液______,D中澄清石灰水______.

考点:(浓)硫酸
题型:填空题
完形填空 。
     In our country every school has a library. I'm    1     you have read many books.  You borrow them
from the school library and keen them for     2    . Maybe you    3     get books from your parents or
friend   4    , If you like reading and want     5   , you may often go to bookshops and buy some yourself.
     Have you    6     thought of how people make a book? Different people must check it several times 
   7     it comes out. After __8  _ finishes reading a book, the book passes through the hands of many
other people. Everyone in the factory, has to work very carefully because    9    must not be any mistake
in it.  Many people are busy _10 _ it. They print it on good paper and put the pieces together before it
goes to the bookshop.
     We all like reading.  Let's take good care of books.
( )1. A. sorry            
( )2. A. some time        
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( )4. A. for a present    
( )5. A. learning many more
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题型:填空题

我国对药学技术人员实行职业准入控制制度的产物是()

A.执业药师 

B.国内的药师、主管药师及主任药师等 

C.国外的药师 

D.临床药师 

E.从业药师

题型:填空题

关于血压叙述正确的是()。

A.测量时被测上肢裸露,肘部高于心脏水平

B.测量时听到的第一声响时汞柱数值为收缩压

C.测量时声音突然变小而低沉为舒张压

D.正常人下肢血压较上肢血压略有差异,可相差12~20mmHg

E.正常人下肢血压较上肢高10~20mmHg

题型:填空题

易出现脑脊液漏的是

A.脑震荡
B.脑挫裂伤
C.颅底骨折
D.颅盖骨折
E.硬脑膜外血肿

题型:填空题

当气温或构件温度低于5℃时,不得进行压浆。水泥浆温度不得超过32℃。

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