
四年级科学练习67(复杂机械)
Authored by LIEW Moe
Science
4th Grade
Used 29+ times

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10 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
自行车是由哪种简单机械组成?(答案有四个)
轮轴
齿轮
杠杆
螺旋
尖劈
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
剪刀是由哪种简单机械组成?(答案有两个)
轮轴
齿轮
杠杆
螺旋
尖劈
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
手摇钻是由哪种简单机械组成?(答案有三个)
斜面
齿轮
轮轴
螺旋
尖劈
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
手推车是由哪种简单机械组成?(答案有三个)
斜面
齿轮
轮轴
螺旋
杠杆
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
起重机是由哪种简单机械组成?(答案有三个)
斜面
齿轮
轮轴
滑轮
杠杆
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
钓鱼竿是由哪种简单机械组成?(答案有两个)
斜面
齿轮
轮轴
滑轮
杠杆
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
铅笔刨是由哪种简单机械组成?(答案有两个)
尖劈
齿轮
轮轴
滑轮
杠杆
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