问题
单项选择题
某调节系统采用比例积分作用调节器，某人用先比例后加积分的凑试法来整定调节器的参数若比例带的参数值已基本合适，在加积分作用的过程中则（）。
A、适当减小比例带
B、应适当增加比例带
C、无需更改比例带
答案
参考答案：B
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某调节系统采用比例积分作用调节器，某人用先比例后加积分的凑试法来整定调节器的参数若比例带的参数值已基本合适，在加积分作用的过程中则（）。
A、适当减小比例带
B、应适当增加比例带
C、无需更改比例带
参考答案：B
Some people have very good memories(记忆力) and can easily learn quite long poem（诗歌） by heart. Some people have 1 memories and can only remember things that they have said again and again. The 2 English writer Charles Dickens said that he could walk down 3 street in London and then tell you the name of every shop on 4 sides of the street. Great men in the world have wonderful memories. A good memory is a great help in learning a language. Everybody learns 5 own language by remembering what he hears when he is a small child. Some children live with their parents in foreign（外国的） countries and they seem 6 two languages as easily as one. At school it is not so easy to learn foreign languages 7 students have little time for it and they are busy with other subjects as well. A man's mind is quite like a camera but it 8 photos of what we see and it can also take photos of what we feel, hear, smell and taste. When we take a real photo with a camera, there is much work 9 before the photo is finished and ready to show to our friends. 10 the same way there is much work to do before we can keep a picture forever（永远）in our mind.
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