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单项选择题

对一个处于论证阶段且没有详细资料的项目进行系统安全分析,适宜采用的方法为(  )。

A．安全检查表
B．事故树分析
C．危险和可操作性研究
D．故障假设分析
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相关考题

单项选择题
根据下面资料，回答21-35题
In the past, I always thought that being a teacher was an easy job. But I changed my（21）when I became a part-time teacher. About four years ago, Richard asked me（22）I could help teach his students how to make a website about themselves.
I（23）because computer is what I do well and I didn′ t think teaching computer would bethat（24）.
But when 1 taught Richard′ s class, some of the students（25）with their friends while I was explaining how to do something. At first I just got angry with them,（26）Richard taught me to think why they were doing this. He said that if he was（27）a lesson and the students were not lis-tening, then he was angry with（28）for not making the lesson clear or interesting for them. I told him that I didn′ t（29）his idea. He then asked me if l had ever（30）the same thing. That made me stop. Of course I had !
If any of my past teachers are（31）this, I want to say sorry if I sometimes played around in the class（32）you were teaching. I didn′ t think how that would make you feel. I promise I will do my best to be a good（33）in the future. Please help us when we don′t understand and most（34）, don′ t be quick to be angry when we fail.（35）of us are perfect but with your help we can be successful.
第（21）题选
A.plan
B.decision
C.choice
D.mind
单项选择题
三相四线制配电的电缆线路必须采用（ ）。
A.多芯电缆
B.三芯电缆
C.四芯电缆
D.五芯电缆
单项选择题
A good teacher must be_________too stricttoo weak.
A.either;or
B.neither;nor
C.notonly;butalso
D.both;and
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