【判断题】矩形花键按装配型式分为固定联接、紧滑动联接和滑动联接三种,如果内、外花键之间要求有相对移动,而且移动距离长、移动频率高的情况,应选用配合间隙较大的滑动联接。
【单选题】He has small _____ and short _____. [ ]
【简答题】It is bad for your eyes to read in the sun. ______ the sun is bad for your eyes.
【简答题】矩形花键按装配型式分为固定联接、紧滑动联接和滑动联接三种,如果内、外花键之间要求有相对移动,而且移动距离长、移动频率高的情况,应选用配合间隙较大的_____联接。
【单选题】Will was lying on the grass, _______the sky thick with stars.
C.
his eyes were fixed on