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阅读表达。阅读下面的短文,并根据短文后面的要求答题。(请注意问题后的字数要求) For years children in the industrial areas of Europe and America seldom left their smoky cities to see the beauties of the countryside. Not that the woods and fields were always far away, but they were too far from the city to permit people to make a round trip between morning and nightfall. What's more, factory workers did not have enoug money to send their children on country holidays away from home. In 1907 a young German schoolmaster had an idea which changed this state of affairs. He decided to turn his little schoolhouse into a domitory for the summer holidays. Anyone who bmught his sleeping bag and cooking equipment along could stay there for a very smaU amount of money. The idea was a success. A few years later the schoolhouse was far too small to hold so many young people who wanted to stay there. So, a dormitory was set up in an old caste nearby. This was the first Youth Hostel. Today young students and workers of every country can meet in the hostels and get to know each other. Some spend a week or more in the same hostel, seeing the surrounding sights and meeting the people of the area. Other youths go on foot or by bicycle from place to place, spending a night or two in one hostel, then going to the next. Sometimes an infomal program will be organized after the meal, with dances, songs, or short talks followed by a question period. One can _____ about other places, just by meeting people who come from these places. For this reason, a few weeks spent 'hostelling' can be just as useful a part of one's education as classes in school. 1. Translate the underlined sentence in paragraph l into Chinese. _______________________________________________________________________________________ 2. What does paragraph 2 mainly tell us? (Please answer within 10 words) _______________________________________________________________________________________ 3. Which sentence in the text is the closest in meaning to the following one? Some youths stay in a hostel for several days, during which period they go sightseeing and visit the local people. _______________________________________________________________________________________ 4. Fill in the blank in the 4th pamgraph with proper words to complete the sentence. (P1ease answer within 7 words) _______________________________________________________________________________________ 5. List 3 of the advantages of hostelling according to the text. (Please answer within 15 words) _______________________________________________________________________________________
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【简答题】流体粘性的大小用粘度表示,常用的粘度有()粘度、()粘度、()粘度。
【单选题】织物幅宽和经纱排列密度由由打纬机构的哪部分来确定?
A.
主轴
B.
钢筘
C.
牵手
D.
曲柄
【单选题】流体的运动粘度不象动力粘度可直接表示流体粘性的大小,只有()相近的流体,才可用来大致比较它们的粘性。
A.
温度
B.
密度
C.
压力
D.
质量
【判断题】流体的粘滞性大小,用粘度来表示。
A.
正确
B.
错误
【单选题】以下关于演习和演练的规定正确的是____ I.为确保有效地实施船舶保安计划的规定,应至少每3个月进行1次演练II.如25%船员变动且在前3个月未参加任何演练,应在变动后1周内进行演练III.可能有COS、SSO、PFSO等参加的各类演习,至少每年一次
A.
Ⅰ+Ⅱ
B.
Ⅰ+Ⅲ
C.
Ⅱ+Ⅲ
D.
Ⅰ+Ⅱ+Ⅲ
【简答题】流体粘性的大小用哪几种粘度表示?
【判断题】电池存放久了,用万用表测量电压为1.45V,但接上小灯泡却不发光,这主要是电源电动势变小了。( )
A.
正确
B.
错误
【判断题】液体流动时,分子之间的 内聚力 阻碍分子的相对运动的性质称为液体的 粘性 ,大小用表示 粘度 , 常用的粘度有 运动粘度 、 动力粘度 、 相对粘度 。
A.
正确
B.
错误
【单选题】以下关于演习和演练的规定正确的是( )。
A.
为确保有效实施船舶保安计划的规定,应至少每三个月进行一次演练
B.
如25%船员变动且在前三个月未参加任何演练,应在变动后1周内进行演练
C.
可能有CSO,SSO,PFSO等参加的各类演习,至少每年1次
D.
以上都正确
【简答题】流体粘性的大小用( )表示。
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