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  3. The technique of spectroscopy allows (analyst) of incoming light after it (has b

The technique of spectroscopy allows (analyst) of incoming light after it (has b

游客2024-01-05  17
问题 The technique of spectroscopy allows (analyst) of incoming light after it (has been) separated into (its) component wavelengths (by passage) through a prism.
选项 A、analyst
B、has been
C、its
D、by passage
答案 A
解析
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