【判断题】In a standard format of business email, it is not necessary for us to begin with date according to the video.
【单选题】In a standard format of business email,s we are not necessary to begin with ___ according to the video.
【判断题】药品按给药途径分类,外用药就是指的皮肤外用药。
【多选题】1978 年 3 月,党中央召开了全国科学大会。大会明确提出了 ( )
【单选题】纵断面设计图上的设计线是由坡度线和( )构成。