A.系统的整体可靠性原则,从人机系统的整体可靠性出发,合理确定人与机器的功能分配,从而设计出经济可靠的人机系统。一般情况下,机器的可靠性高于人的可靠性,实现生产的机械化和自动化,就可以将人从机器的危险点解脱出来,从根本上提高了人机系统的可靠性
B.高可靠性组成单元要素原则,系统要采用经过检验的、高可靠性单元要素来进行设计,由于负荷条件和环境因素随时间而变化,所以可靠性也是随时间变化的函数,并且随时间的增加,可靠性降低。因此,设计的可靠性和有关参数应具有一定的安全系数,保证了可靠性
C.高可靠性方式原则,为提高可靠性,宜采用冗余设计、故障安全装置、自动保险装置等高可靠度结构组合方式。系统安全常是以正常的准确的完成规定功能为前提。多达到功能准确性,采用保险结构方法可保证系统的可靠性
D.高维修度原则,为便于检修故障,且在发生故障时易于快速修复,同时为考虑经济性和备用方便,应采用零件标准化、部件通用化、设备系列化的产品
E.预测和预防的原则,要事先对系统及其组成要素的可靠性和安全性进行预测。对已发现的问题加以必要的改善,对易于发生故障或事故的薄弱环节和部位也要事先制定预防措施等
第1题
A、stuffed
B、stiff
C、suffered
D、staff
第2题
A.Different sentences will be written on each card
B.They have already booked some cards
C.Melinda.s colleagues will help her
第3题
A.is full of
B.are full of
C.is full with
D.are full with
第4题
A.To receive cards made by hand.
B.To get friends' cards on her birthday.
C.To send the cards to her friends in other countries.
D.To make some cards all by herself.
第5题
A.Watch her partner.
B.Play her cards in cooperation with her partner.
C.Quit the game.
D.Teach the man how to play bridge.
第6题
A.Watch her partner playing the game.
B.Play her cards in cooperation with her partner.
C.Quit the game.
D.Teach the man how to play bridge.
第7题
Why do some companies design their business cards in full color?
A.To keep up with the trend.
B.To make the cards look fancy.
C.To distinguish themselves from others.
D.To vividly demonstrate the corporate culture.
第8题
A.Watch her partner playing cards.
B.Play cards in cooperation with her partner.
C.Quit the game and go away.
D.Teach the man how to play bridge.
第9题
What will the woman probably do if she is the dummy?
A.Watch her player.
B.Play her cards in cooperation with her partner.
C.Quit the game.
D.Teach the man how to play bridge.
第10题
What will the woman probably do if she is the dummy?
A.Watch her player.
B.Play her cards in cooperation with her partner.
C.Quit the game.
D.Teach the man how to play bridge.
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