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【判断题】
由于单排行星齿轮机构有两个自由度,因此它有固定的传动比,可以直接用于变速传动。(
A.
正确
B.
错误
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【单选题】绿奎宁反应主要用于鉴别( )
A.
硫酸奎宁
B.
盐酸吗啡
C.
盐酸麻黄碱
D.
硫酸阿托品
【单选题】绿奎宁反应主要用于鉴别()。
A.
盐酸麻黄碱
B.
硫酸奎宁
C.
盐酸吗啡
D.
磷酸可待因
E.
硫酸阿托品
【单选题】绿奎宁反应主要用于鉴别
A.
硫酸阿托品
B.
硫酸奎尼丁
C.
硫酸链霉素
D.
盐酸麻黄碱
E.
盐酸吗啡
【单选题】By mentioning an organization in San Diego, the author intends to______.
A.
encourage institutions to do interdisciplinary researches
B.
state many institutions strive to study set environment's influence on humans
C.
prove that researches in neuroscience have been in popularity
D.
advocate that architecture schools should involve introductory neuroscience
【单选题】听力原文: Is it possible to persuade mankind to live without war? War is an ancient institution which has existed for at least six thousand years. It was always bad and usually foolish, [32] but in the pa...
A.
Worse than in the past.
B.
As bad as in the past.
C.
Not so dangerous as in the past.
D.
As necessary as in the past.
【单选题】绿奎宁反应主要用于鉴别()。
A.
硫酸奎宁
B.
硫酸阿托品
C.
盐酸吗啡
D.
黄体酮
【单选题】绿奎宁反应主要用于鉴别( )
A.
硫酸奎宁
B.
硫酸阿托品
C.
盐酸吗啡
D.
黄体酮
E.
利血平
【单选题】Most eduction institutions in the UK provides ________ courses and more specific vocational or applied subjects.
A.
literature
B.
human education
C.
math education
D.
general education
【多选题】The main categories of American higher eduction institutions are ( ).
A.
the universities
B.
the 4-year undergraduate institution
C.
the the 2-year community college
D.
the technical training institution
【多选题】理论研究型论文一般包含哪两种类型?
A.
实验研究型论文
B.
理论推导型论文
C.
文献综述
D.
理论分析型论文
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