4/6年级科学-永续使用机械

Quiz
•
Science
•
4th - 6th Grade
•
Medium
HOOI KUAN NEOH
Used 12+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
可永续使用的机械必须具备以下条件,除了?
经济、耐用
使用简便、安全
不会对环境有害
能够提升人力资源
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
制造机械是必须考量以下因素,除了?
制作材料,环保性
使用寿命、成本
生产力、利润
保养费、安全性
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
开罐器如果采用铁来制作,会带来以下后果,除了?
生锈
不耐用
浪费金钱,增加垃圾量
增加可更新的资源
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
被生锈的物体割伤可能会带来以下什么后果?
冠状病毒
破伤风
冠状肺炎
手足口症
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
人类应用简单机械的原理创造了许多工具,目的是什么?
使工作环境变得更和谐
使工作变得更轻松
使工作变得更有效率
使工作变得更复杂
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
铁锤、图钉和楼梯应用了什么机械的原理来操作?
斜面
杠杆
简单机械
复杂机械
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪种简单机械使用了两个带齿的轮来改变物体运动的方向?
斜面
杠杆
滑轮
齿轮
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