关于Althoughmanhasknowna的百科

•    Althoughmanhasknownasbestos(石棉)formanyhundredsofyear...

• 问题详情：   Althoughmanhasknownasbestos(石棉)formanyhundredsofyears,itwasnotuntil160yearsagothatitwasminedforthefirsttimeontheNorthAmericancontinent.H.W.Johns,ownerofaNewYorkCitySupplyShopforroofers（盖屋顶的人）,wasresponsiblefor(对…负责)theopeningof...
• 2020-01-1012673