四年级科学 - 简单机械
Quiz
•
Science
•
4th Grade
•
Easy
CHIA Moe
Used 3+ times
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中 A 是这个杠杆的什么重要位置?
支点
动力点
阻力点
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中 B 是这个杠杆的什么重要位置?
支点
动力点
阻力点
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中 C 是这个杠杆的什么重要位置?
支点
动力点
阻力点
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中 A 是这个杠杆的什么重要位置?
支点
动力点
阻力点
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中 B 是这个杠杆的什么重要位置?
支点
动力点
阻力点
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中 C 是这个杠杆的什么重要位置?
支点
动力点
阻力点
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪一种工具是第一类杠杆？
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