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【判断题】
变的报警电路监视变的温度、油压和滤油器三个信号。
A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】If something is part of the shorthand , can you (a) easily understand it, or (b) not understand it?
A.
easily understand it
B.
not understand it
【单选题】对于正态随机变量来说,它落在区间(μ-3σ,μ+3α)内的概率为( )。
A.
95%
B.
68%
C.
99%
D.
100%
【单选题】对于正态随机变量来说,它落在区间(μ-3σ,μ+3α)外的概率为()。
A.
99.73%
B.
68.26%
C.
4.55%
D.
0.27%
【判断题】小说《时间机器》中,时间旅行者来到80万年之后,看到的埃洛伊人外表美丽,四肢强壮。
A.
正确
B.
错误
【简答题】There are many kinds of friends. Some are always 26 you, but don't understand you. Some say only a few words to you, but understand you. Many people will step in your life, but only 27 friends leave f...
【单选题】喷油器试验台主要用于检查喷油器的喷油压力、喷射质量和()的一种专用仪器。
A.
渗透性
B.
密封性
C.
耐压性
D.
雾化性
【简答题】There are many kinds of friends. Some are always 36 you, but don't understand you. Some say only a few words to you, but understand you. Many people will step in your life, but only 37 friends leave f...
【多选题】根据实验中观察到的现象,以下对压电陶瓷的伸缩长度与加载电压关系的论述中,正确的是( )
A.
加载到压电陶瓷上的电压增加时,压电陶瓷的长度伸长;加载到压电陶瓷上的电压降低时,压电陶瓷的长度缩短。
B.
加载到压电陶瓷上的电压增加时,压电陶瓷的长度缩短;加载到压电陶瓷上的电压降低时,压电陶瓷的长度伸长。
C.
压电陶瓷伸长的速率和缩短的速率与所加载电压的变化速率成正比。
D.
压电陶瓷伸长的速率和缩短的速率与所加载电压的变化速率不是线性关系。
【判断题】To understand a word, you have to read all the letters in it; to understand a sentence you have to read all the words in it.()
A.
正确
B.
错误
【单选题】喷油器试验台主要用于检查喷油器压力、喷射质量和( )的一种专用仪器。
A.
渗透性
B.
密封性
C.
耐压性
D.
雾化性
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