1. 以下哪项是电源?
科学-电

Quiz
•
Science
•
KG - 12th Grade
•
Medium
LOW LEK SOON
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
电报
电视机
电动机
发电机
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
2. 电视机和冷气机的遥控器使用哪种电源来操作?
发电机
蓄电池
干电池
小型发电机
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
3. 下图显示一个电路图。图中的K符号代表什么?
灯泡
电线
开关
干电池
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
4. 当我们在串联电路中增加干电池的数量时,灯泡会有什么影响?
灯泡全部熄灭
灯泡的亮度减弱
灯泡的亮度增加
灯泡的亮度保持不变
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
5. 以下哪项有关并联电路的说明是正确的?
并联电路中的灯泡是依次连接的。
并联电路中的电流只有一条通路。
多数灯饰应用并联电路的方式来连接。
如果并联电路中的一个灯泡熄灭了,其他灯泡不受影响。
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
6. 下图显示一个电路。当X开关被按下,电路中的灯泡会有什么影响?
P 灯泡会发亮。
Q 灯泡会发亮。
P 和 Q 灯泡都会发亮。
P 和 Q 灯泡都不会发亮。
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
7. 哪项是节省用电的方法?
经常打开冰箱门。
一次只熨一件衣服。
把冷气机调至最低温。
定期清理冷气机里的过滤网。
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