问题
不定项选择
如图所示为汽车中的速度计，某同学在汽车中观察速度计指针位置的变化，开始时指针指在如图甲所示的位置，经过5s后指针指在如图乙所示的位置，若汽车做匀变速直线运动，其加速度约为
A．1.6m/s2
B．2.2m/s2
C．5.1m/s2
D．8.0m/s2
答案
答案：B
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如图所示为汽车中的速度计，某同学在汽车中观察速度计指针位置的变化，开始时指针指在如图甲所示的位置，经过5s后指针指在如图乙所示的位置，若汽车做匀变速直线运动，其加速度约为
A．1.6m/s2
B．2.2m/s2
C．5.1m/s2
D．8.0m/s2
答案：B
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| It's a photo of Han Han. He is a young writer (年轻作家) in 1 .Many students like 2 books, because some of them are about students' life. Han Han is 3 Shanghai. He's twenty-eight 4 old. He can 5 Chinese and English. Han Han likes running,playing football 6 computer games. He often 7 on his blog (博客). Students can read his articles (文章) on it. Han Han has 8 yellow dog. It likes to 9 with him. Do you know what Han Han's favorite 10 is? It's the watermelon (西瓜). | ||||
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