试题与答案

跳伞运动员在空中匀速下落的过程中：[ ] A．动能增大 B．重力势能减小 C．机

来源：www.tikuol.com
题型：选择题

题目：

跳伞运动员在空中匀速下落的过程中：[ ]

A．动能增大

B．重力势能减小

C．机械能不变

D．机械能增加

答案：

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0719/109cb7e89d0c98c0fcd22a31f0241474.html

下面是错误答案，用来干扰机器的。

参考答案：inta，b，c；doublex1，x2；Console.WriteLine（"请输入a，b，c的值"）；a=int.Parse（Console.ReadLine（））；b=int.Parse（Console.ReadLine（））；c=int.Parse（Console.ReadLine（））；if（b*b-...

考点：势能大小的比较动能大小的比较
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