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【简答题】
安全人机工程学是人机工程学的一个分支,它是从____的观点出发,为进行系统安全分析和预防伤亡事故和职业病提供人机工程学方面知识的科学体系。
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举一反三
【单选题】非线性系统的稳定性与下列因素有关( )
A.
系统结构和参数
B.
初始条件
C.
输入信号大小
D.
以上全部
【判断题】非线性系统中,系统的稳定性只取决于系统的结构和参数,而与输入信号及初始条件无关
A.
正确
B.
错误
【单选题】Not believing their eyes, the visitors on the spot_______ the flying plane, doing some most difficult and dangerous tricks in the sky. [     ]
A.
glared at
B.
stared at
C.
glanced at
D.
caught sight of
【单选题】线性系统的稳定性与输入信号和初始条件( ),非线性系统平衡状态的稳定性与系统初始条件( )。
A.
有关、有关
B.
有关、无关
C.
无关、有关
D.
无关、无关
【单选题】Why was the survey based on the scores of a math exam?
A.
Because math was the most difficult course.
B.
Because it was a federal exam and is fair.
C.
Because math could reflect the teaching quality in a better way.
D.
Because all students took the math exam.
【单选题】The exercise is not difficult but just needs care and patience.
A.
by itself             
B.
of itself            
C.
in itself            
D.
for itself
【单选题】—Do you like math ? ---Yes ,but I think it’s _________subject of all.
A.
the easiest
B.
the most difficult
C.
easier
D.
more difficult
【单选题】非线性系统的稳定性与下列因素有关。
A.
系统结构和参数
B.
初始条件
C.
输入信号大小
D.
其它选项都是
【单选题】非线性系统的稳定性和动态性能与下列哪项因素有关? ( )
A.
输入信号
B.
初始条件
C.
系统的结构、参数
D.
系统的结构参数和初始条件
【单选题】Ingrid played the part of Ilsa Lund in Casablanca which made her go over the most difficult situation of her career.
A.
Y
B.
N
C.
NG
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