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  3. The technique of spectroscopy allows (analyst) of incoming light after it (has been) separated into (its) component wavelengths

The technique of spectroscopy allows (analyst) of incoming light after it (has been) separated into (its) component wavelengths

admin2005-01-30  70
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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