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不同的物质由于组成和结构的不同,获得的特征光谱也就不同,因而根据试样的光谱就可以研究该试样的组成和结构
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正确
B.
错误
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【简答题】A.It is less serious in cities than in rural areas. B.It affects both junior and senior high schools. C.It results from a worsening economic climate. D.It is a new challenge facing American educators.
【单选题】Today computers _____ in both cities and town. [     ]
A.
are using
B.
are used
C.
were used
【简答题】A.It is less serious in cities than in rural areas. B.It affects both junior and senior high schools. C.It results from a worsening economic climate. D.It is a new challenge facing American educators.
【单选题】_____ New York _______ London are two of the largest cities in the world.
A.
Either; or
B.
Both; and
C.
Neither; nor
D.
Not only; but also
【单选题】Both cities ____very beautiful, attracting people from all over the country.
A.
has      
B.
have     
C.
are      
D.
is
【多选题】教育目的是教育活动的出发点和归宿,其层次的多样性使它具有多方面的功能,其功能包括( )。
A.
定向功能
B.
调控功能
C.
激励功能
D.
评价功能
E.
衍生功能
【简答题】Mexico City is truly one of the most amazing cities in the world with a mixture of both the old and new world. From the moment your plane starts to land in this vast city, you know that your trip will...
【单选题】In both the rural area and the cities, the Burmese prefer to wear_______
A.
western-style clothing
B.
traditional garment
C.
long dress
D.
colored headbands
【多选题】HDFS 体系结构主要包括()。
A.
唯一主节点(运行 NameNode , JobTracker , Zookeeper , Hmaster 等负责集群管理、资源配置、作业调度的程序)
B.
多个从节点( dataNode ,承担数据存储及计算任务)
C.
客户端( Client ,用于支持客户操作 HDFS )
D.
机架(RACK)
【单选题】I think Quanzhou City and Xiamen City are similar in_______ both 0f the two cities are located on the seaside.
A.
what
B.
that
C.
which
D.
where
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