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【简答题】
阅读理解。 Van is Jim's new friend at school. Van comes from a country far away. He doesn't talk like the other children in school. But he can do numbers and draw. The teacher asks Jim to show Van around and help him. Van sits with Jim and his friends at lunch. Jim shows Van how to play kickball. Jim points to something and says the word. Van tries to say the word. Van is learning many new words. He wants to learn how to read. Van is happy that Jim helps him and is his friend. Jim likes Van, too, because Van tries so hard. 1. In the picture, Van is ______. [ ] A. reading a book B. crying C. having lunch D. angry 2. When Van first comes to school he can't ______. [ ] A. talk like the other children B. do numbers and draw C. eat the food D. find a friend to help him 3. The teacher asks ______ to show Van around. [ ] A. his deskmate B. his sister C. Jim D. his friends 4. The story says Jim likes Van because Van ______. [ ] A. can read B. tries very hard C. is nice D. can draw 5. The best title (题目) is ______. [ ] A. At School B. Van Plays Ball C. Van Smiles D. Helping a New Friend
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【单选题】在单吊杆受力分析中求解吊杆轴向压力R的公式为( )
A.
R=L/H[Q]+Qˊ
B.
R=L/H[Q+Q’]
C.
R=L/H[Q]+L/HQˊ
D.
R=2L/H[Q+Q’]
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【单选题】在单吊杆受力分析中求解吊杆轴向压力R的公式为________。
A.
R＝L/H[Q+G/2]＋Q'
B.
R＝L/H [Q＋Q']
C.
R＝L/H[Q]＋L/HQ'
D.
R＝2L/H[Q＋Q']
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A.
R＝L/H[Q]+Q’
B.
R＝L/H[Q+Q’]
C.
R＝L/H[Q]+L/HQ’
D.
R＝2L/H[Q+Q’]
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