选出滑轮的名称。
三年级科学---第十课《机械》
Quiz
•
Science
•
3rd Grade
•
Medium
WONG Moe
Used 25+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
定滑轮
动滑轮
滑轮组
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
这种滑轮有什么优点？
不能省力，但使工作更方便
滑轮与重物一起移动，能省力
定滑轮和动滑轮的组合，滑轮越多越省力
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
这种滑轮有什么优点？
不能省力，但使工作更方便
滑轮与重物一起移动，能省力
定滑轮和动滑轮的组合，滑轮越多越省力
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
这种滑轮有什么优点？
不能省力，但使工作更方便
滑轮与重物一起移动，能省力
定滑轮和动滑轮的组合，滑轮越多越省力
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
选出滑轮的名称。
定滑轮
动滑轮
滑轮组
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
选出滑轮的名称。
定滑轮
动滑轮
滑轮组
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
滑轮是一种_________。
定滑轮
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