它是什么滑轮？
3年级科学机械
Quiz
•
Science
•
3rd Grade
•
Medium
LAY Moe
Used 162+ times
FREE Resource
15 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
它是什么滑轮？
定滑轮
动滑轮
滑轮组
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
利用这种滑轮时，我们的力量是......
向前推
向上推
向下拉
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
利用这种滑轮时，我们的力量是......
向下拉
向上拉
向前推
向后退
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
滑轮的轮子周缘有_________, 能套上 绳子或链条才能操作。
轴
糟
重物
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项不是滑轮的用处？
提起重物并运到高处
节省力气
工作变得较为容易
浪费时间
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
使用定滑轮拉动重物时，滑轮的位置是________的。
移动
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