当冷冻离心机用完后,不要马上关闭离心机盖子,应敞开一段时间,待冷冻造成的霜自然晾干后,再关闭离心机盖子
正确
暂无解析
______isrecognizedasthenationalflag-carrier.
We___youforthespecialofferyousendus.()
Thegirlwasluckyenoughto_______thebadmenandranaway.
_______inthought,healmostranintothecarinfrontofhim.
Welodge(声明)aclaim_______you_____theshort--weight.()