![操作系统的随机性指的是（ ）。[2017年真题]](https://img.tiw.cn/resimg/q/62vclwvs.jpg "操作系统的随机性指的是（ ）。[2017年真题]")
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设有内半径为a而外半径为b的圆筒受内压力q，试求内半径和外半径的改变，并求圆筒厚度的改变。
如果对对方的报盘感到不满意，谈判者应该（）
下列关于肝外胆管结石的说法，错误的是（ ）。
急性胰腺炎患者如果呕吐频繁克引起：（）
旅行社设立分社的，自设立登记之日起（ ）个工作日内向分社所在地的旅游行政管理部门备案。
Cloze 5 “I’ m really thankful to our governing, for it provides us with such a good training program. The training greatly helps us live well. I will certainly study hard and learn the skills. Then I can 1 my family difficulties and do good to other people.” a learner on the job training program said, feeling 2 . The learner’s grandfather is nearly 80 years old, and his mother is 3 in bed. So his father, who is a farmer, is the main 4 of the family. The family is poor. The learner graduated from high school and did not 5 the college entrance exam. The job training pro- gram helps him learn the skills that he’ll 6 in the workplace. The story reminds me of another 7 . It goes like this: Once upon a time, there was a man who liked fishing very much, and was 8 to catch lots of fish every day. The man was a kind-hearted person, so he always 9 his fish with his neighbors who did not know how to fish. One day, he thought that it would be 10 if he taught them how to fish. So he 11 his neighbors together and showed them how to fish. Everybody was very happy that they could 12 the fish they themselves caught. At present, there are still a lot of poor people throughout the world. But it’s not good if we give only 13 to them. 14 , we should give them a chance to learn new skills. Therefore, a technical training is very important to people in need, and they will learn the ability to 15 money. People can learns lot of useful things in the training program and what they learn can help them on the way to find jobs.
中华世纪坛是中国人民迎接新千年、新世纪的标志性和纪念性建筑。在这里举行了迎接2001年、走向新世纪的各种庆典活动。（ ）
风力发电机组齿轮油如果是合成油应该在运行多久检测油样（）。
直流电电化学疗法的作用是（）
ZG80-1500型机车牵引电动机采用哪些悬挂方式？