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【单选题】
荧光与磷光的一个显著区别是 ( ) 。A.
荧光比磷光寿命长
B.
同一物质磷光发射波长通常比荧光发射波长短
C.
磷 光比 荧 光寿命长
D.
光照停止后 ， 仍有荧光发出而磷光立即熄灭
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B.
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A.
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A.
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