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【单选题】
在原子吸收分光光度法中，由于表面引力的变化而引起的吸收强度的变化，属于（）。A.
化学干扰
B.
物理干扰
C.
电离干扰
D.
光谱干扰
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举一反三
【单选题】-----Who ______ it be that hasn’t handed it in yesterday? ------It _______ be Bob. He handed it in yesterday.
A.
can; mustn’t
B.
must; can
C.
can; can’t
D.
may; mustn’t
【单选题】It is always true that sometimes even if you have had a big dinner, _________ are that you will still want to reach for food when it gets late．
A.
problems
B.
facts
C.
chances
D.
cases
【简答题】If you have had even limited contact with people from other cultures, you know that they differ in both ( ) and ( ) ways.
【简答题】Let’s say you have had a sore throat for several weeks . You have done everything you can to relieve (减轻）the pain: medicine, Vitamin C, and even chicken soup. All these things help your throat feel be...
【简答题】“两情若是久长时,又岂在朝朝暮暮”是秦观《 》中的名句。
【简答题】“两情若是久长时,又岂在朝朝暮暮”是秦观《 》中的名句。
【单选题】Even if you have had a big dinner, ___ are that you will still want to reach for food when it gets late．
A.
problems
B.
facts
C.
chances
D.
cases
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