
四年级科学 - 机械 (杠杆)
Authored by YeeLing Lee
Science
4th Grade
Used 9+ times

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10 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
杠杆有三个重要的位置,是什么?
支点
省力点
动力点
阻力点
用力点
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图片中哪个部分是支点?
P
Q
R
S
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
扫把应用了哪种简单的机械原理?
滑轮
斜面
杠杆
齿轮
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项不是简单机械?
杠杆
滑轮
斜面
磁铁
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪一种工具不属于杠杆原理的应用?
剪刀
核桃夹
温度计
羊角锤
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
—————支撑着杠杆,使杠杆能围绕着转动的位置。
动力点
阻力点
支点
费力点
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
承受重物的位置是?
动力点
阻力点
支点
费力点
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