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【单选题】
若主动轴转速为1200r/min,现要求在高效率下使传动轴获得12r/min的转速,应采用( )传动。A.
蜗杆
B.
一对齿轮传动
C.
齿轮系传动
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【简答题】When I was a child, my parents always told me that I should never talk to strangers. This was part of a whole list of things I should never do: Never accept food or candy from strangers, never get in ...
【单选题】肝性脑病患者血液中的芳香族氨基酸含量增多的毒性影响是使
A.
支链氨基酸浓度减少
B.
支链氨基酸浓度增加
C.
ATP减少
D.
假性神经递质增多
E.
真性神经递质增多
【简答题】I always talk things _____(选一个:about, of , over)with my subordinates , but I make it(it 具体指什么) clear to them that I’m the one who has to have the final say.
【单选题】What are involved in Maslow's theory?
A.
Physical needs, safety needs and social needs.
B.
Physical needs, psychical needs and safety needs.
C.
Physical needs, psychical needs and social needs.
【简答题】This is a talk by a London taxi driver. “I’ve been a taxi driver for nearly ten years. Most London taxi drivers have their own taxis. It’s a nice job most of time. You meet a lot of people. I always w...
【单选题】我国宪法将"国家尊重和保障人权"规定为一项基本原则,法律的重要使命就是充分尊重和保陳人权、人权的法律保障包括宪法保障,立法保障、立法保障、行政保护和司法保障。其中,宪法保障是( )。
A.
人权保障的关键环节
B.
人权保障的重要条件
C.
人权保障的前提和基础
D.
人权保障的最后防线
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