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【简答题】
完形填空。 Tim Becker and his neighbors are doing something to make their neighborhood a trouble-free area. When Tim Becker gets in his car to go shopping, he doesn't just drive to a store, and back home. He always looks __ 1 __ up and down the streets of his neighborhood. He looks for any thing unusual such as strange cars, loud noises. __ 2 __ windows, or people gathering on street corners. Tim belonged to a neighborhood watch group in Stoneville, Indiana, USA. The neighborhood watch group meet on the third Wednesday of every month. That's __ 3 __ Tim gets together with about ten of his neighbors to discuss community safety. Members of the neighborhood watch group want to help the police__ 4 __ their homes, streets, and families safe. Tina Stedman, president of their neighborhood watch group, agrees with Tim. 'People seem to think that crime happens to other people but not to them. Well, it's __ 5 __ happened to me,' she said, 'but I don't think anyone has the right to steal from other people or to make them feel unsafe sitting in their own homes.' Alex, a member of the group, said that all the neighbors look out for one another, 'We watch each other's homes. We keep watch out the neighborhood at night and on weekends. Usually a group of four or five of us goes out together. If something doesn't look right, then we call the police. For example, if we notice a group of teenagers who seem to be looking for __ 6 __ or someone destroying property, we report to the police.' Alex feels the neighborhood watch groups help a lot in keeping crime down. Her husband Jim agrees, 'Police are good people, but they can't do everything.' (     ) 1.A. carefully (     ) 2.A. dirty (     ) 3.A. where (     ) 4.A. keep (     ) 5.A. ever (     ) 6.A. work B. clearly B. nice B. why B. hold B. never B. people C. happily C. old C. when C. let C. often C. service D. widely D. broken D. how D. protect D. sometimes D. trouble
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【简答题】超临界萃取的原理是什么?
【单选题】“筋之余”是指
A.
B.
C.
D.
E.
【单选题】正吸高的泵工作时最低压力是在?
A.
吸入液面
B.
吸入过滤器后
C.
吸入阀后
D.
泵的内部
【单选题】正吸高的泵工作时最低压力是在()
A.
吸入液面
B.
吸入过滤器
C.
吸入阀后
D.
泵的内部
【简答题】“筋之余”是指( )
【单选题】筋之余是指:
A.
B.
齿
C.
D.
【多选题】软文的形式多种多样,根据内容可分为( )。
A.
故事式软文
B.
悬念式软文
C.
情感式软文
D.
恐吓式软文
【多选题】超临界流体萃取的特点:
A.
萃取时操作温度、压力超过临界点使气体形成超临界流体
B.
萃取时操作温度、压力低于临界点使气体形成超临界流体
C.
杂质不易溶解于超临界流体,而溶质易于溶解 于超临界流体
D.
萃取后降低压力使超临界流体变成气体而使物料析出
E.
萃取后升高压力使超临界流体变成气体而使物料析出
F.
常采用 CO 2
G.
操作条件温和、安全性能高, 适用于生物活性物质等萃取
【简答题】超临界 萃取 原理
【单选题】筋之余指的是
A.
B.
C.
齿
D.
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