什么是滑轮?
三年级科学 机械

Quiz
•
Science
•
3rd Grade
•
Medium
Alice Thai
Used 227+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
滑轮可以用来提起重物并运到高处,使人们的工作变得较容易
滑轮由绳子和周缘有槽的轮子所组成
滑轮是一种简单机械
滑轮是一种复杂机械
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
滑轮的重要性是什么?
使工作较容易进行
进行工作时较省力
让我们较安全地进行攀爬活动
帮助进行拯救工
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪个物体有应用滑轮的原理?
升国旗
时钟
手表
风扇
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
滑轮有哪2个特征?
有槽的绳子
轮子
绳子
与槽的轮子
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
滑轮有哪3个什么类型?
定滑轮
动滑轮
滑轮组
轮滑机
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪个是滑轮的好处?
可以让我们容易地把重物提到高处
拉起重物不能省力
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪个是滑轮的坏处?
可以让我们容易地把重物提到高处
拉起重物不能省力
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