【简答题】A.The greenhouse effect. B.The heat from the sun. C.Such objects as the seats, the dashboard, etc. D.Carbon dioxide, methane(甲烷)gas and water vapor.
【单选题】我国现行的《食品添加剂卫生标准》标准是( )
【简答题】A.A hardworking and ambitious young man. B.A young man good at managing his time. C.A graduate with practical working experience. D.A man with his own idea of what is important.
【单选题】测量血压出现假性高读数的原因可能是( )
【简答题】在括号里填上合适的词语。(提示:填写两个) 轻易地 ( ) ( )
【单选题】适用于具有芳伯胺基或水解后产生芳伯胺基药物鉴别的是
【判断题】如果一个非空集合R满足了四条加法运算,而且满足两条乘法运算可以称它为一个环。()