【简答题】有一柱面,上下两底为圆,其正截面为椭圆,则这种柱面叫做( ) A.圆柱面 B.椭圆柱面 C.曲柱面 D.变形柱面
【单选题】一根毛细管插入水中,液面上升的高度为h,当在水中加入少量的NaCl,这时毛细管中液面的高度为
【单选题】She is careful as me, but I’m than you.
【多选题】对一个类定义而言,可以包含三种最常见的成员:
【单选题】有一柱面,上下两底为圆,其正截面为椭圆,则这种柱面叫做( )。
【单选题】一根毛细管插入水中,液面上升的高度为h,当在水中加入少量的乙醇,这时毛细管中液面上升的高度( )h。
【简答题】Understand what Jet Lag is, and how a careful diet can______(minimum)its worst effects, and your flights will be less stressful.
【单选题】Be careful how you ______________ that bottle; it will break very easily.
【简答题】Understand what Jet Lag is,and how a careful diet can minimize its worst effect,and your flights will be less______(stress).
【单选题】Be careful how you _____ that jug, it will break very easily.