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【简答题】
总体单位总量与总体标志总量，可以随研究对象的变化而发生变化。（ ）
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举一反三
【单选题】Woman: Do you think Professor Simpson will cancel class on account of the special conference? Man: Not likely. Question: What does the man mean?
A.
He doesn't like the professor very much.
B.
He doubts class will be cancelled.
C.
He doesn't want to attend the conference.
D.
He wonders whether the professor is an actor.
【简答题】传统的集合“并、差、交”运算施加于两个关系时,这两个关系必须( )。
【单选题】Why do the man and woman want to talk to Mr. Simpson?
A.
He is a psychology professor with much knowledge.
B.
His views during arguments are very powerful.
C.
He may be able to add information to a research paper.
D.
He has personal experience in this field.
【单选题】()is the hunter with the professor in the search of gorillas.
A.
Clayton
B.
Sarah
C.
Billy
D.
Tarzan
【简答题】传统的集合“并、差、交”运算施加于两个关系时,这两个关系必须 。
【简答题】Professor Simpson talked to the students about the _________ of scientific laws from observation.(derive)
【简答题】传统的集合“并、差、交”运算施加于两个关系时,这两个关系必须 。
【简答题】传统的集合“并、差、交”运算施加于两个关系时,这两个关系必须 。
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