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【单选题】
以下哪项不属于从数据的结构化程度这一维度划分的数据类型?( )?A.
非结构化数据
B.
半结构化数据
C.
一次数据
D.
结构化数据
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举一反三
【单选题】In English vocabulary, words of French______are not rare.
A.
source
B.
resource
C.
birth
D.
origin
【单选题】Nearly half of all English words are of French origin because
A.
Britain was conquered by Norman French once
B.
British people think French is very beautiful
C.
scholars introduced many French words into English
D.
English colonists lived in France for a long time
【简答题】向量组Ⅰ与向量组Ⅱ所含向量个数相等且等价，则向量组Ⅰ线性无关的充要条件是向量组Ⅱ线性无关． 向量组Ⅰ与向量组Ⅱ等价，则向量组Ⅰ线性无关的充要条件是向量组Ⅱ线性无关？
【单选题】As to the origin of English medical and pharmaceutical terms, which of the following statements is NOT TRUE?
A.
The vocabulary contains a lot of borrowed words.
B.
Greek and Latin have the greatest impact on those English terms.
C.
A larger portion of the vocabulary is derived from Old English.
D.
The influence of German on English medical and pharmaceutical terms is resulted from the country’s great progress in science and technology.
【单选题】向量组 向量组 则_______.
A.
向量组A可由向量组B线性表示,向量组B可由向量组A线性表示
B.
向量组A不能由向量组B线性表示,向量组B可由向量组A线性表示
C.
向量组A可由向量组B线性表示,向量组B不能由向量组A线性表示
D.
向量组A不能由向量组B线性表示,向量组B不能由向量组A线性表示
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