若企业采用维持、集中、收缩或放弃策略，这表明产品进入了()
A、介绍期D
暂无解析
Itisimportantto________yourskinfromtheharmfulstrongsunlight.
写信(40points)
Writealetteraccordingtothefollowingsituation:theWenchuanearthquakehasmadethiswinterextremelydifficultforthevictims.WritetotellyourfriendSmiththatyouareraisingmoneytobuy200piecesofcotton-paddedclothingandsomeothernecessitiesfortheearthquakevictims.Askhimtojointhecharityandshowyourappreciationsforhishelp.Don’tforgettotellhimyourphonenumber555-5555forfurtherdiscussion.PleasesignyournameasLiPing.(150-200words)
新生儿寒冷损伤综合征最关键的护理措施是（）
Hewasvery_____togo，buthehadnochoice.
根据对患者人身造成的损害程度，医疗事故分为______
