用带锥套的心轴装夹工件，夹具以滑套从端面夹紧工件，减小工件的夹紧变形。( )
参考答案：对
--- We'll have a school trip to Shanghai next month.
--- That sounds _______. I'm sure we'll have a good time there.
A．well
B．badly
C．bad
D．good
《都江堰》作者在文章中为什么要说李冰“大愚，又大智”、“大拙，又大巧”？
