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【简答题】
某一浓度为2.0×10 -4 mol·L -1 的有色溶液，若用3.0cm比色皿测得吸光度为0.120，将其稀释一倍后用5.0cm比色皿测得吸光度为0.200。是否符合朗伯-比尔定律?
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举一反三
【单选题】-Our school uniform is quite cool.Don't you think so? -_____.School uniforms prevent self-expression.
A.
Yes,I think si
B.
Yes,I believe it
C.
No,I don't think so
D.
No,I think so
【判断题】A fixed rate system may limit a central bank's ability to adjust interest rates as needed for economic growth.
A.
正确
B.
错误
【简答题】常见的滤波器有( )、( )和 复式滤波器。
【单选题】_____ prevent her from going to the party, he pretended to be ill ______.
A.
So as to, by design
B.
In order to, on purpose
C.
So as to, by accident
D.
In order to, with purpose
【单选题】Central bank intervention is more common under a floating exchange rate system than under a fixed exchange rate system.
A.
TRUE
B.
FALSE
【简答题】It is imperative that you take special precautions to pr the goods ______ leaking.
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