【单选题】V带(三角带)带轮的轮槽角( ) 40。
【单选题】you've tried it on, you can't imagine how pleasant the new style dress is. [ ]
【单选题】全陪与首站地陪一起要提前到达接站地点迎候旅游团,提前到站时间是( )。
【单选题】Little by little, you ve tried to______away at my hopes.
【单选题】—You know, Jack, I've tried to call you for a long time. — ______. How have you been?