三年级科学-滑轮的应用
Quiz
•
Science
•
3rd Grade
•
Practice Problem
•
Medium
SENG Moe
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10 questions
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1.
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。
2.
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
3.
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。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
所使用的滑轮类型
滑轮组
定滑轮
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
所使用的滑轮类型
定滑轮
动滑轮
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
以下哪个工具用应用滑轮操作(多项答案)
电梯
椅子
升旗杆
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
滑轮在我们日常生活的重要性 (多项答案)
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
帮助进行拯救工作
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