6年级单元一（设计与工艺）
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Education
4th Grade
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
机电主要是以______和电气元件构成的系统。
机械
机器
机电
机气
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
机电主要是以机械和_______元件构成的系统。
电气
电能
电机
电脑
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项不是是应用机电系统操作的物品
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项是机械元件
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项是电气元件
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项是电子元件
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
轴是______________的
杆子， 用于转动轮子和
支撑其他机械元件。
一种穿在轮子中间
一种穿在轮子傍边
一种穿在轮子上面
一种穿在轮子下面
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