皮皮学，免费搜题
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【单选题】
下列与光化学基本定律有关的说法中正确的是( )。A.
凡是被物质吸收了的光都能引起光化学反应
B.
光化学反应所得到的产物数量与被吸收的光能的量成正比
C.
在光化学反应中,吸收的光子数等于被活化的反应物微粒数
D.
在其他条件不变时,吸收系数越大,透过的光强度也越大
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】阅读理解。 Do You Go To Sleep In Class? The 'Acronym', our student newspaper, reports that most students go to sleep at 1: 30 a. m. Even if that's an exaggeration (夸张), it's too close to the truth. Scienti...
【多选题】关于山莨菪碱的叙述,错误的是
A.
对胃肠平滑肌和血管平滑肌的解痉作用强
B.
对眼的作用弱
C.
抑制唾液分泌作用强
D.
可用于晕动病和帕金森病
E.
青光眼患者禁用
【单选题】Today we have _________. [ ]
A.
two new student
B.
new two students
C.
new two student
D.
two new students
【单选题】B Maybe you are an average(一般的) student．You probably think you will never be a top student．However ，anyone can become a better student if he or she does lus or her best．Here are some tips to help you．...
A.
Three．
B.
Four．
C.
Five．
D.
Six．
【简答题】A．Only one student of the department. B．All the students of the department. C．Some students in the department. D．None of the above.
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