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【单选题】
摩尔吸光系数说法正确的是A.
摩尔吸光系数是化合物吸光能力的体现，与测量波长无关
B.
摩尔吸光系数的大小取决于化合物本身性质和浓度
C.
摩尔吸光系数越大，测定的灵敏度越高
D.
摩尔吸光系数越小，测定的灵敏度越高
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皮皮学刷刷变学霸
举一反三
【单选题】They believed that the merchants had conspired to undermine the nation's economic independence.
A.
uphold
B.
minimize
C.
weaken
D.
postpone
【单选题】At one time doctors discouraged taking multivitamins because they believed that multivitamins ________.
A.
could not easily be absorbed by the human body
B.
were potentially harmful to people’s health
C.
were too expensive for daily consumption
D.
could not provide any cure for vitamin deficiencies
【单选题】______ , his poor health was due to his smoking habit.
A.
Obviously
B.
Generally
C.
Summary
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