四年级科学 - 第十课 机械
Quiz
•
Science
•
4th Grade
•
Practice Problem
•
Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
筷子应用了哪种简单的机械原理?
滾子
斜面
滑轮
杠杆
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪一种工具不属于於杠杆原理的应用?
剪刀
镊子
面包夾
温度计
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项不是简单机械
杠杆
斜面
螺旋
磁力
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
这是一个门把,请问它应用了哪个简单机械原理?
杠杆
轮轴
尖劈
滑轮
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
如果要让这个杠杆保持平衡,可以怎么做?
把橡皮往左移
把橡皮往右移
把笔往左移
把笔往右移
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
阿樺使用這個滑轮组提起重物,請选出所有正确的选项。
A是定滑轮、B是动滑轮。
动滑轮可以改变施力方向。
动滑轮可以省力,但費时。
這整个滑轮组,让阿樺可以省力,也可以改变施力方向。
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
钓鱼竿应用了哪些简单机械原理?(答案超过一个)
杠杆
齿轮
轮轴
斜面
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