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【简答题】
某金属离子X与R试剂形成一有色溶液，若溶液中X的浓度为1.00×10 -4 mol·dm -3 ，用1cm比色皿在525nm处测得吸光度为0.400，求此配合物在525nm处的摩尔吸光系数ε。
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举一反三
【判断题】While comparing the two generations of college students, the author based his argument mainly on statistical evidence.
A.
正确
B.
错误
【单选题】While comparing the two generations of college students, the author based his argument mainly on statistical evidence.
A.
T
B.
F
【单选题】_______ with the size of the whole earth, the highest mountain does not seem high at all. A) When compared B) While comparing C) Compare D) Comparing
A.
When compared
B.
While comparing
C.
Compare
D.
Comparing
【单选题】消化管一般结构包括
A.
粘膜、固有层、粘膜下层和肌层
B.
粘膜、粘膜下层、肌层和外膜
C.
粘膜、粘膜下层、肌层和纤维膜
D.
粘膜、粘膜下层、肌层和浆膜
E.
粘膜、粘膜下层、粘膜肌层和外膜
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