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【简答题】
完成句子。 根据括号内的汉语提示，用句末括号内的英语单词完成句子。 1. Up to now, the cost of the vacation____ (没有计算出 来)yet.( calculate) 2. In general, plants can't grow well_____ (在没有…… 的地方)plenty of sunshine.( there) 3. — You look so worried. What's the matter? — I don't know____ (我如何能解决)these boring problems.( solve) 4. — We want to sit at the table near the door. — I'm sorry, but it____(被预订了)already.( take) 5. I am advised not to leave my company until I____ (找 到)another job.( find) 6. The father as well as his two sons____(喜欢)playing online games at the time, so they bought a computer.( fond) 7. She never gets along well with people around her as a result of____(溺爱)by her parents.( spoil) 8 .____(在……帮助下)the Internet, we can finally understand the meaning of these phrases.( help) 9. So fast does light travel that____(我们难以)to imagine its speed.( difficult) 10. The ancient city,____(……的首都)of three dynasties, was destroyed by a big fire later.( capital)
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【简答题】如图所示的矩形闸门AB,闸门宽b=3m,门重G=9.8kN,α=60o,h1=1m,h2=1.73m,试求:(1)下游无水时闸门的启闭力T;(2)下游水深为h3=0.5h2时闸门的启闭力T。
【单选题】如图所示矩形闸门 AB 的宽 b =3 m, 门重 G =9800 N, α =60°, h 1 =1 m, h 2 =1.73 m 。下游无水时的启门力与下游有水时( h 3 == h 2 /2 )时的启门力分别为()
A.
101.5 KN ； 100.3 KN
B.
131.5 KN ； 110.2 KN
C.
121.5 KN ； 100.3 KN
D.
141.5 KN ； 131.5 KN
【判断题】张謇慈善公益思想中最为显著的一大特点，是不像以往的慈善界人士那样，仅仅单纯的就慈善而论慈善，就公益而论公益，而是将慈善公益事业作为整个社会改良的系统工程中的重要一环。
A.
正确
B.
错误
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【简答题】如图所示的矩形闸门AB,闸门宽b=3m,门重G=9.8kN,α=60o,h1=1m,h2=1.73m,试求:(1)下游无水时闸门的启闭力T;(2)下游水深为h3=0.5h2时闸门的启闭力T。