某酸在18℃时的平衡常数为1.84×10－5，在25℃时的平衡常数为1.87×10－

发布时间：2018-03-04 10:52 │ 来源：www.tikuol.com

题型：单项选择题

问题：

某酸在18℃时的平衡常数为1.84×10^－5，在25℃时的平衡常数为1.87×10^－5，则说明该酸（）。

A.在18℃时溶解度比25℃时小

B.的电离是一个吸热过程

C.温度高时电离度变小

D.温度高时溶液中的氢离子浓度变小

考点：有机化学工程基本有机化工工艺考试基本有机化工工艺考试题库

题型：单项选择题

完形填空。

     On a Friday night, a young violinist was playing his violin at the entrance (通道口) of the subway
station. The music was so wonderful   1   people slowed down to listen and put some money into
his hat.
     The next day, the violinist came to the entrance again. He   2   his hat as usual. Beside the hat there
was a piece of paper. It said,"George Sang has put an important thing   3   my hat by mistake. Welcome
to claim(认领) it." Soon the people went to see the words and they   4   guessed what it could be. After
a while, a man came up and said,"I know you would certainly come here." The violinist asked," Did you
lose something?""A lottery ticket( * * )." The violinist took out a lottery ticket with George's name on it.
George took it and danced   5  .
     George was   6   office worker. He bought the lottery and won a prize of $500,000. But when he
gave $50 to the violinist for his wonderful music, the lottery ticket was thrown into his hat, too. The   7
was a poor college student. That morning, he was going to fly to Vienna for his education. However,
when he   8   the lottery ticket, he didn't go as he had planned. Instead, he went to the entrance again to
wait for the owner of the lottery ticket.
     Later someone asked the violinist   9   he didn't take the lottery ticket to pay for his high education.
He said,"Although I don't have much money, I live happily. If I take the money, I will lose honesty, and I
   10   be happy forever."

( )1. A. but
( )2. A. put down
( )3. A. above
( )4. A. both
( )5. A. slowly
( )6. A. a
( )7. A. office worker
( )8. A. looked
( )9. A. why
( )10. A. will

B. that
B. put up
B. under
B. all
B. happily
B. an
B. crowd
B. looked for
B. how
B. won't

C. because
C. put on
C. into
C. whole
C. sadly
C. the
C. violinist
C. found
C. that
C. would

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B.TSAb阳性

C.TGAb和TPOAb阳性

D.TSH降低

E.rT₃升高

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有人说，宋代是封建社会发展史上的重要阶段，具体表现在

①开创了三省六部制，为后世沿用 ②打破“坊”“市”界限，商业空前繁荣

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④开始出现诗的新形式词和散曲

A．①②③

B．②③④

C．①②④

D．②③

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小李和小刘的哪些做法不符合市场监管对象信息维护的程序？（3分）

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列出student表中所有男同学数据的SQL语句是______。

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