(12分) 如下图所示的装置,C、D、E、F都是惰性电极。将电源接通后,向乙中滴

题型:实验题

问题:

(12分) 如下图所示的装置,C、D、E、F都是惰性电极。将电源接通后,向乙中滴入酚酞试液.在F极附近显红色。

试回答以下问题:

(1)电极A的名称是          

(2)甲装置中D电极的电极反应式:       ______________________________  

(3) 在25℃时若用惰性电极电解饱和NaCl溶液一段时间,当阳极产生5.6L(标准状况下)一种气体,电解后溶液体积为50L时,求所得溶液在25℃时的氢氧化钠物质的量浓度=________        。

(4)欲用丙装置给铜镀银,G应该是       ____ (填“银”或“铜”), 电镀液的主要成分是(填化学式)                           

考点:电解池原理电解池电极反应式的书写
题型:实验题

幼儿园里的大班老师在给同学们分一袋铅笔,无论是分给6个人,还是分给8个人,都能正好分完。请问这袋铅笔至少有多少根?

题型:实验题

Frank Woolworth was born in Rodman, New York, in 1852. His family were very poor farmers, and there was never enough to eat. Frank did not want to be a farmer. He took a short business course, and went to work as a salesman in a large city.

Woolworth realized he had a natural skill for showing goods to attract people’s interest, but he soon learned something more important. One day his boss told him to sell some odds and ends(小商品)for as much as he could get. Frank put all these things on one table with a sign which said “FIVE CENTS EACH’. People fought and pushed to buy the things and the table was soon cleared.

Soon afterwards, Woolworth opened his own store, selling goods at five and ten cents. But he had another lesson to learn before he became successful. That is, if you want to make money by selling low-price goods, you have to buy them in large quantities directly from the factories. Once, for example, Woolworth went to Germany and placed an order for knives. The order was so large that the factory had to keep running 24 hours a day for a whole year. In this way, the price of the knives was cut down by half.

By 1919, Woolworth had over 1000 stores in the US and Canada, and opened his first store in London. He made many millions and his name became famous throughout the world. He always ran his business according to strict rules, of which the most important was : ‘THE CUSTOMER IS ALWAYS RIGHT.”

小题1:Frank took a short business course in order to __________.

A.earn more money for his family

B.learn something from a salesman

C.get away from the farm

D.get enough to eat小题2:Frank sold the odds and ends quickly because ________.

A.he knew how to get people to buy his goods

B.he cut down the price by half

C.he had put the goods on a table in a very nice way

D.the sign he put on the table was well designed小题3: The price of the knives was cut down by half because _________.

A.the factory workers worked 24 hours a day

B.knives were ordered in large quantities directly from the factory

C.the knives were made in German, where labour was cheap

D.the knives were produced in one factory小题4:__________  make Woolworth a world-famous man.

A.His business skills and his wealth

B.The low price of the goods he sold

C.His trip to Germany and his huge order of knives

D.His natural skill for showing things小题5:The belief that “The customer is always right” suggests that __________.

A.whenever there is a quarrel between the customer and shop assistant, the customers are always right.

B.If you want to succeed, the rule is the only way

C.stores must always follow the customer’s orders if they want to make more money

D.stores should do their best to meet the customer’s needs if they want to be successful

题型:实验题

下列关于信托理财产品的说法,不正确的是()。

A.投资项目的方向决定了该信托产品的收益率和风险

B.信托管理公司通常只对信托产品承担有限责任

C.银行担保的信托产品风险较低

D.信托产品的流动性通常比较好,有较好的转让平台

题型:实验题

下列哪些检查可协助诊断肝豆状核变性()

A.角膜K-F环

B.血清铜蓝蛋白低于200mg/L

C.每天尿铜排泄量>100μg

D.肝铜含量>200μg/L

E.其基因与ESD基因和RB基因紧密连锁

题型:实验题

受托人不得利用信托财产为自己谋取利益,利用信托财产为自己谋取利益的()

A.所有利益应该归人信托财产

B.受益人不能要求受托人返还利益

C.受益人可以要求从中分得一部分利益

D.所有利益应当没收归国家所有

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