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【单选题】
下列药物中哪个药物不溶于NaHCO3溶液中A.
布洛芬
B.
阿司匹林
C.
双氯酚酸
D.
萘普生
E.
萘普酮
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举一反三
【单选题】The kind of speech which is very detailed and used for the planning stage is called the().
A.
preparation outline
B.
speaking outline
C.
specific outline
D.
general outline
【简答题】烷烃分子中碳原子均为( )杂化,碳碳键和碳氢键都是( )键。
【单选题】It is important to use only pure lead and to choose a thickness of wire which is greater than the normal allowable clearance but _____ this amount.
A.
not less than twice
B.
greater at least twice than
C.
not greater twice than
D.
larger three times than
【简答题】A greenhouse is a building made of glass which is used for keeping plants when the outside temperature is low. In a similar way there are several gases in the atmosphere which trap(捕捉)the heat produce...
【单选题】About the t distribution centered on 0,Which is wrong?
A.
The distribution is a cluster of curves.
B.
The distribution is symmetric .
C.
when v(degree of freedom) is identical ， | t | is much bigger ， P value is also bigger.
D.
The distribution is unimodal.
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