Why does Catherine say people themselves produce harmful vapors into the indoor air?
A.People shed more than any other animal indoors.
B.People do not keep their room tidy.
C.People's skin flakes are small enough to float in the air and pollute the indoor air.
D.The furniture people buy is in bad quality.
第1题
成人引起缺铁性贫血最常见的原因是
A.摄入减少
B.慢性失血
C.胃酸缺乏
D.需要量增加
E.胃大部切除术
第8题
缺铁性贫血最常见的;原因是
A.需要量增加而摄入不足
B.胃大部切除术后
C.慢性失血
D.骨髓抑制
E.饮食中缺乏维生素
第9题
成人缺铁性贫血最常见的原因是
A.饮食中缺铁
B.慢性溶血
C.胃大部切除手术
D.慢性失血
E.需铁量增加
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!