一般而言，PLC的I/O点数要冗余多少？（）A.10% B.5% C.15% D.2

根据下列短文内容，在短文后的空格处填上一个恰当的词，使短文完整、通顺。

    Everyone may fail or may meet with difficulties. When a person meets difficulties, he should adopt(采取)a right attitude(态度)to them. In fact, some people will 1. g_____ up after they fail once. They regard

themselves as failures(失败者),and are not 2. a_____to get over the difficulties.They face up to the failure. They try to find out what the 3. p_____ was. At last, they get over their difficulties. They have the right

attitude to deal with difficulties.

     "Do not ever lose heart." This is the advice given by a successful young man. This young man once got

hurt in his leg. He could never stand as 4. b_____. This was an unlucky thing. But he didn't lose heart. At

last he found out that he could do many things as well as 5. h_____ people. He started to do research on

computers. 6. F_____ he succeeded in becoming an expert(专家)on computers.

     The story tells us not to lose heart whatever 7. h_____ .Difficulties are nothing if you have courage and

confidence in yourself.Let's learn something from the story.Keep on going,and you will make it.Remember: Nothing is 8. i_____ if you put your heart into it!

1. _______2. _______3. _______4. _______5. _______

6. _______7. _______8. _______

设置据齿形街沟目的？

（）客票始终由旅客持有。

材料一：我党一直高度重视运用文化引领前进方向，不断加强和改进党对文化工作的领导，2011年4月，中 * * 政治局会议讨论决定：党的十七届六中全会重点研究深化文化体制改革、推动社会主义文化大发展大繁荣问题，这是我们党对文化发展方位的科学把握；中 * * 同时决定：成立党的文件起草组，充分发扬民主，广泛听取了民主党派和人民群众的意见，对《决定》作出325处修改。

材料二：当今世界正处在大发展大变革大调整时期，面对各种思想文化相互激荡，要保持我国社会主义先进文化的性质不能改变，我们必须坚持弘扬文化主旋律与提倡文化多元化相统一，既要提倡文化多元化，保持社会文化生活活跃的态势，又要奏响文化主旋律，努力在多元文化中坚持社会主义文化的主导地位。

推动社会主义文化大发展大繁荣必须大力加强社会主义核心价值体系建设，因为社会主义核心价值体系是兴国之魂，是社会主义先进文化的精髓，决定着中国特色社会主义发展方向。请从文化生活角度，为社会主义核心价值体系建设提出你的建议。