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【单选题】
共轭酸碱对的关系是( )。
A.
Ka×Kb=1
B.
Ka×Kb=Kw
C.
Ka/Kb=1
D.
Ka/Kb=Kw
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举一反三
【单选题】The hero of the story was an artist ______.
A.
in his thirty
B.
in his thirty's
C.
in his thirtieth
D.
in his thirties
【判断题】出版物发行单位总部将进货权利相对分散到各个区域或连锁门店,由各区域或连锁门店在核定的金额范围内,直接向供货商购进出版物,这种进货机制是分散进货机制。
A.
正确
B.
错误
【单选题】--What a moving story! --But it's not true.  The boy_________the story. [     ]
A.
 made up
B.
  laughed at
C.
  looked up
D.
  made into
【单选题】已知 int a=-1,b=4,k;k=(++a<0&&!(b--<0)); 则 k , a , b 的值分别为( )。
A.
1 , 0 , 4
B.
1 , 0 , 3
C.
0 , 0 , 3
D.
0 , 0 , 4
【单选题】The husband' s story and his wife' s story ______each other.
A.
retract
B.
contract
C.
distract
D.
contradict
【单选题】某连锁超市要检验商品销售情况与陈列方式是否相关,随机抽取了300家门市,他们将商品分别以A,B,C工三种方式陈列,并将各门市销售情况以“高”和“低”归成两类。进行了列联表独立性检验分析。请补齐分析表格中空白处的数据()
A.
a=18.776;b=2
B.
a=18.776;b=4
C.
a=13.495;b=2
D.
a=13.495;b=4
【单选题】The writer ______ the old folk story with his own imagination and wrote a new story.
A.
performed
B.
impressed
C.
combined
D.
represented
【判断题】手机银行又称为移动银行,是指通过移动通信网络将客户的移动电话与银行进行连接,实现通过手机界面直接完成诸如账号查询,账户转账等各种金融服务的一种崭新的业务产品。()
A.
正确
B.
错误
【简答题】After Peter died, George ______________ the story of their friendship in a book. A.added up B.set down C.turned out D.get along with
【单选题】采用振动压路机对粒料基层进行复压时,其碾压速度应( )。
A.
先慢后快
B.
慢速
C.
快速
D.
先快后慢
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