简述包装的作用。
(1)保护商品;(2)便于储运;
(3)方便消费;(4)促进销售;
(5)提高价值
暂无解析
下列哪项是胸外按压指征的正确描述?
Thissickmanwas_____inablanket.
PartIVTranslation
Itwouldhavebeendifficultforthemtoavoidtheconclusionthatthehorseandmulepopulationwoulddeclinerapidly.(PassageFour)
Youhaveyourchoiceofthree_____oficecream.
当正压人工呼吸与胸外按压配合进行时大约每分钟各多少次?