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【单选题】
一焊接工字形截面简支梁，材料为Q235，fy=235N/mm 2 均布荷载作用，并在支座处已设置支承加劲肋，梁的腹板高度和厚度分别为900mm和12mm，若考虑腹板稳定性，则（）。A.
布置纵向和横向加劲肋
B.
无需布置加劲肋
C.
按构造要求布置加劲肋
D.
按计算布置横向加劲肋
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举一反三
【单选题】I got from him only a letter, which was pu t on my office desk; to the receipt of this letter I have never heard from him.
A.
subsequent
B.
remarkable
C.
solitary
【单选题】D ear Sukie: I need your help! I can ’ t get a job. E verywhere I go, I get the same answer “ No ” . What should I do? Sad Sam You are reading a letter of asking for .
A.
a job
B.
advice
C.
a reply
【简答题】根据要求改写句子。 1. She wrote a letter to her friend. (用Just 改为现在完成时) She _ just a letter to her friend. 2. Lucy likes reading books better than playing s .(改为同义句) Lucy _ reading books playing s . 3....
【简答题】在低压设备上作业时,严禁1人单独作业。带电作业时作业人员的安全等级不得低于三级;停电作业时至少有1人的安全等级不低于_____ 级。
【单选题】一 Do you know where I can post the letter? —____.
A.
I put the letter on your desk in the office
B.
What letters do you post?
C.
There's a post office at the end of St. Beach
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