下列光学器具中，利用反射定律制成的是（ )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29893' and id < 2424894 and id<>'2424894' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29893' and id > 2424894 and id<>'2424894' order by id asc limit 5