【简答题】滚动轴承按其所承受的荷载形式可分为哪几类?
【简答题】滚动轴承按所能承受的载荷方向不同,可分为( )轴承和推力轴承两大类。
【单选题】滚动轴承按可承受载荷的方向分类时,深沟球轴承属于 ____________ 轴承。
【单选题】The word other in Paragraph 3 refers to ______.
A.
areas such as Peru and Brazil
C.
Brazil, Chile, and other areas
【简答题】Compared with their displaced counterparts in Peru, the situation of the internally displaced persons in Colombia is ______.
【单选题】Bolivia, Peru, Ecuador, Columbia, and Venezuela are all members of _____. 玻利维亚、秘鲁、厄瓜多尔、哥伦比亚和委内瑞拉都是......的成员。
【单选题】The discovery of dinosaur fossil sites in Bolivia is exciting because of the following reasons EXCEPT ______.
A.
they are found in continent other than Asia and North Continent
B.
the largest dinosaurs in the world are found in this discovery
C.
there are some unknown species of dinosaurs found this time
D.
the dinosaurs were believed to be some of the last ones on earth
【单选题】滚动轴承按可承受载荷的方向分类时,调心球轴承属于 ____________ 轴承。