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【简答题】
下列各组溶液，①Na 2 CO 3 溶液、NaOH溶液、Ca（OH） 2 溶液、稀盐酸；②HCl、Na 2 CO 3 、BaCl 2 、Na 2 SO 4 ；③KOH、MgSO 4 、CuSO 4 、NaCl；④稀盐酸、稀硫酸、Ba（OH） 2 、Na 2 CO 3 ．不加其他试剂就能鉴别的是（ ） A．②③ B．①②③ C．②③④ D．①②③④
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【单选题】The following simple model is used to determine the annual savings of anindividual on the basis of his annual income and education.【图片】Refer to the model above. The benchmark group in this model is __...
A.
the group of educated people
B.
the group of uneducated people
C.
the group of individuals with a high income
D.
the group of individuals with a low income
【简答题】进攻战术基础配合包括（）配合。
【简答题】This Agreement is entered into ______ the parties concerned ______ the basis of equality and mutual benefit to develop business ______ terms and conditions mutually agreed upon as follows: .
【单选题】O fficial market-moving announcements of this kind are frequently foreshadowed by unofficial rumours. Buying or selling on the basis of such “inside” information violates the rules of most stock-marke...
A.
slope
B.
trick
C.
rumour
D.
rise
【简答题】阅读理解。 Mr. Brown is a very old man. Every morning he goes for a walk in the park. And he comes home at twelve thirty for his lunch. But today a police car stops at his house at twelve o'clock. Two poli...
【单选题】[单项选择题]在网络商品直销过程中,为保证交易过程中的安全,需要( )确认在互联网上交易的买卖双方的真实身份。
A.
相关行政部门
B.
认证中心
C.
网上银行
D.
信用卡公司
【简答题】阅读理解。 Mr. Brown is a very old man. Every morning he goes for a walk in the park. And he comes home at 12:30 for his lunch. But today a police car stops at his house at twelve o’clock. Two policemen he...
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