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【简答题】
波长 λ =400 nm 的光照射到金属铯上,计算金属铯所放出的光电子的速率。已知铯的临阈波长为 600 nm 。
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A.
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B.
In a word
C.
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A.
overproduction
B.
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A.
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B.
所采用的施工机械类型
C.
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D.
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