题目内容
“电空位”操作时空气制动阀在缓解位只能缓解机车,不能缓解车辆。
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电空位操作时,中立位与运转位,空气制动阀作用柱塞所处的位置相同,即切断了调压阀管向作用管充气和作用管排大气的通路。
空气制动阀上的定位柱塞,只起定位的作用,它不控制任何部件。
Directions:In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank. You may not use any of the words in the bank more than once.People often ask me how to get off the consumer escalator (自动扶梯). Step one is to begin to control your consumer desires. For example, don’t surf shopping(1) . You also have to convince the other people around you to start acting differently too.One response by a growing number of Americans has been to reject the(2) of work and spend. Adjusting their consumption, working less, even embracing principles of being(3) with simplicity. For the(4) of fewer working hours, they often have to leave their jobs, and that’s a cost not many of us can pay. We need to (5) up those corporate policies to give people the right to work less, to give people better vacations. We need to (6) a progressive consumption tax, which puts higher burdens on the people who buy expensive products.Today our identities are so deeply wrapped up in the (7) products that we own and use. To get out of work and spend we need to look carefully at the messages that are coming from Madison Avenue. Much of what they’re telling us is that exclusivity (排他性) is the cool value we want to (8) for, but isn’t a better value system than one which highlights our commonality, which is more about connecting with other people, rather than (9) up with them and having more than they do. We can make those connections ourselves. This should be the (10) of our life philosophy.A. advocate B. content C. core D. cycle E. debt F. derive G. episodes H. keeping I. living J. luxury K. open L. privilege M. sake N. strive O. websites
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