【多选题】下列说法正确的有( )
A.
滚动轴承内孔与轴的配合应采用基孔制,其外圈与相应的零件孔的配合应采用基轴制。
B.
滚动轴承内孔与轴的配合、滚动轴承外圈与相应的零件孔的配合实际多为过渡配合。
C.
滚动轴承内孔的极限偏差代号均为H;滚动轴承外圈的极限偏差代号均为h。
D.
滚动轴承与轴安装时非常紧,为了方便装配,可以将安装轴承的轴径磨削0.001mm。
【单选题】As for Nietzsche's opinion of thought and walk, the author holds that ______.
A.
it will arouse a bit suspicion
B.
it is reasonable to accept it
C.
it derives from Henry Thoreau's idea
D.
it only works for challenging work
【单选题】以下哪个命令可以在目录树中查找文件()。
【多选题】有关轴上零件固定或定位的描述,( )正确的。
B.
过盈连接也是周向固定方法之一,如通常情况下,滚动轴承内圈与轴的配合即可采用过盈连接
C.
圆螺母与止动垫片配合可以实现轴上零件的轴向固定,且可以承受较大轴向力
【单选题】关于轴承的下列说法中,不正确的是()
B.
在任何条件下,滚动轴承的效率均为98%~99%
C.
滚动轴承内圈与轴的配合采用基孔制,外圈与轴承座的配合采用基轴制
D.
常用的润滑方法有滴油润滑,油环润滑,飞溅润滑以及压力润滑
【多选题】What is philosophy and what is Nietzsche’s philosophy?
A.
Philosophy is the study of general and fundamental problems concerning matters such as existence, knowledge, values, reason, and mind.
B.
The term was probably coined by Pythagoras.
C.
Philosophical methods include questioning, critical discussion, rational argument and systematic presentation.
D.
Classic philosophical questions include: Is it possible to know anything and to prove it? Is our universe real? However, philosophers might also pose more practical and concrete questions, such as: Is there a best way to live? Do humans have free will?
E.
Because of Nietzsche’s evocative style and provocative ideas, his philosophy generates passionate reactions. His works remain controversial, due to varying interpretations and misinterpretations.
F.
In the Western philosophy tradition, Nietzsche’s writings have been described as the unique case of free revolutionary thought. His writings are revolutionary in its structure and problems, although not tied to any revolutionary project.
【单选题】“醋花生”是适合哪种类型原发性高血压的食疗方?( )
【单选题】下迷关于交流电动机解体维修的操作方法叙述正确的是1经检查轴承内外圈有无松动滚珠与跑道表面有无麻点和破损手插内圈,转动外圈,听声音大小和有无杂音,即可判断轴承有无异常;2无论轴承有无异常,解体电动时都必须拆下轴承进行更换;3在转子上拆卸轴承时,最常用的方法是用专用工具(拉马)钩住轴承内圈,搬动丝杠进行拆卸,若内圈与轴之间配合很紧,拆卸时可渗些滑油,然后用专用工具(拉马)拉下来;4取出转子方法是用专用...
【单选题】下述关于交流电动机解体维修的操作方法叙述正确的是 。1经检查轴承内外圈有无松动;滚珠与跑道表面有无麻点和破损;手插内圈,转动外圈,听声音大小和有无杂音,即可判断轴承有无异常2无论轴承有无异常,解体电动时都必须拆下轴承进行更欢3在转子上拆卸轴承时,最常用的方法是用专用工具(拉马)钩住轴承内圈,搬动丝杠进行拆卸。若圈内与轴之间配合很紧,拆卸时可渗些滑油,然后用专用工具(拉马)拉下来。...
【判断题】Robert House's path-goal theory maintains that an effective leader clears the path for a follower to the follower's goal.