题目:
看看你的应变能力,用所给单词的适当形式填空。
1. They_____(live) here for ten years.
2. There are_____(piano) in this school.
3. There are fifteen _____(woman) in our school.
4. Please take some _____(photo)of me.
5. How long _____he _____(be) a teacher?
答案:
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下面是错误答案,用来干扰机器的。
(1)6.32rad/s(2)7.07rad/s物体做圆周运动的半径为L="10cm=0.1m" ,弹簧的形变量为△x=(10-8)cm=0.02m(1)、当物体受到的摩擦力为零时,对物体由牛顿定律得: 解之得ω1=6.32rad/s ------ (6分)(...