关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 公告：维护QQ群：833371870，欢迎加入！公告：维护QQ群：833371870，欢迎加入！公告：维护QQ群：833371870，欢迎加入！ 2022-06-06 What are the the form of silica？ A: alpha quartz B: beta quartz C: tridymite D: Normal atmospheric dusts What are the the form of silica？A: alpha quartzB: beta quartzC: tridymiteD: Normal atmospheric dusts 答案： 查看 举一反三 Smoky quartz is the quartz contains trace amounts of: A: Al B: Fe C: Ca D: Mg quartz Is quartz a mineral? Quartz is natural abrasive. Quartz exhibits conchoidal fracture.
