三年级 10机械【定滑轮的操作方式+滑轮的应用】P2
Quiz
•
Science, Fun
•
3rd Grade
•
Practice Problem
•
Medium
Huiwen Koh
Used 17+ times
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28 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
滑轮可分为几种?
定滑轮与滑轮组
定滑轮与动滑轮
定滑轮、动滑轮与滑轮组
动滑轮与滑轮组
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
__________ 的位置固定。把绳子向下拉,重物就会上升。
动滑轮
定滑轮
滑轮组
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项是滑轮的应用?
升起帆船的帆。
用扫把扫地。
用拖把抹地板。
拔河。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项不是滑轮的应用?
拉起渔网。
升旗与降旗。
帮助攀岩者爬山岩石。
滑板
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当我们应用定滑轮时,向下拉绳子,重物会__________ 。
往上升。
往下降。
保持不变。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
这是?
定滑轮
动滑轮
滑轮组
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
这是?
滑轮组
定滑轮
动滑轮
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