四年级科学杠杆
Authored by HERNG WEN CHUAH
Science
1st Grade
Used 39+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
简单机械可分为几种？
5
6
7
8
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
剪刀属于哪一类杠杆？
一
二
三
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪个是第二类杠杆？
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下图那个是第三类杠杆？
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
杠杆有三个重要的位置，除了
重物点
支点
动力点
阻力点
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么是动力点？
支撑着杠杆
承受重物的位置
有精神做事
施力的位置
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么是阻力点？
支撑着支点
承受重物的位置
施力的位置
阻碍我们做事
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