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一、选择填空(本题共14分,每小题2分) 1 1.(2)疲劳极限2.(4)F23.4)边界摩擦4.(2)动力粘度 5.(3)3%6.(4)自由锻造毛坯 7.(1)对称循环 二、按图选答案(本题共16分,每小题2分) 1.b2.c3.b4.a5.c6.a7.c8.c 三、回答问题(本题共16分) 1.1-C,2-E,3-A,4-B,5-D 2.1)蜗杆-齿轮减速器传动Ⅱ 2)带-齿轮减速器I
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外研版(三起)(2012)小学英语四年级下册Module 9 Unit 2 Did you have a nice holiday$%Module 9 Unit 2 Did you have a nice holiday$%导学案
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外研版(三起)(2012)小学英语四年级下册Module 9 Unit 2 Did you have a nice holiday$%Module 9 Unit 2 Did you have a nice holiday$%教案(4)
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外研版(三起)(2012)小学英语四年级下册Module 9 Unit 2 Did you have a nice holiday$%Module 9 Unit 2 Did you have a nice holiday$%教案
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外研版(三起)(2012)小学英语四年级下册Module 9 Unit 2 Did you have a nice holiday$%Module 9 Unit 2 Did you have a nice holiday$%教案(1)
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外研版(三起)(2012)小学英语六年级下册Module 8 Unit 2 Why are you wearing a hat$%Module 8 Unit 2 Why are you wearing a hat$%习题(2)
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