【单选题】下列有关阿司匹林类药物的描述,哪些是正确的?
【多选题】What elements do Chinese characters have?
【单选题】Pictophonetic characters account for over ( ) of all Chinese characters.
【单选题】Pictophonetic characters account for over ( ) of all Chinese characters.
【判断题】城镇基准地价评估应以土地的实际收益为依据。( )
【单选题】如果杀菌钝酶不彻底,氧化酶会导致果蔬组织变色,而( )可能导致罐头食品中果蔬组织软化。