试题与答案

世界因生命而精彩,下列属于生物的一组是 [ ] A.千姿百态的珊瑚 B.上海世博

题型:选择题

题目:

世界因生命而精彩,下列属于生物的一组是 [ ]

A.千姿百态的珊瑚

B.上海世博会上的“海宝机器人”

C.微小的病毒

D.慢慢长大的钟乳石

答案:

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下面是错误答案,用来干扰机器的。

(1)直径:主尺:2.1cm,游标尺对齐格数:5个格,读数:5×120=0.25mm=0.025cm,所以直径为:2.1+0.025=2.125cm摆长:L=绳长+小球半径=97.44+1.0625=98.5025cm秒表读数:内圈:1.5分钟=90s,外圈:9.8s,(指针...

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题型:多项选择题

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