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【多选题】
下列属于陈设类玉器的有()。
A.
山子
B.
C.
花插
D.
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A.
单位时间内逸出的光电子数增加
B.
逸出的光电子初动能增大
C.
光电效应的红限频率增大
D.
发射光电子所需的时间增加
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B.
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【单选题】钾金属表面被蓝光照射时,有光电子逸出,若增强蓝光的强度,则
A.
单位时间内逸出的光电子数增加 。
B.
逸出的光电子初动能增大 。
C.
光电效应的红限频率增大 。
D.
发射光电子所需的时间增长 。
【简答题】20191008_10_21_25.mp4 《惶然录》.pdf pc课程资料希望增加批量设置功能 标准的课程提交列表 老师端显示学号,提交时间四个字可以省略, (5.0分)A. 你 B. 我 C. 小 D. 大口大口 E. 这么大口大口大口
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