1.

___________FILTERS_ARE_UTILIZED_FOR_PURPOSE,_ESPECIALLY_WITH_HIGH‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ√ÜTEMPERATURE_BLACKBODY_RADIATION,_WHERE_LARGE_AMOUNTS_OF_U.V._LIGHT_(WHICH_COULD_CAUTILIZE_EYE_AND_SKIN_DAMAGE)_ARE_PRODUCED.?$#

A. Heat
B. UV
C. Grey body
D. Dye
Answer» C. Grey body


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