自然五下_3-3水溶液的導電性
Quiz
•
Chemistry
•
5th Grade
•
Practice Problem
•
Medium
LIAO SIAOMEI
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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
如果沒有發光二極體,檢測導電性時可以用什麼代替?
橡皮擦
小燈泡
衛生紙
石蕊試紙
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
電壓的單位是什麼?
伏特
瓦特
安培
牛頓
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列哪一項是發光二極體的優點?
用電量大
只有一種顏色
造價非常低廉
使用壽命長
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
發光二極體、電池與電線可以用來檢測水溶液的哪一種特性?
酸鹼性
導電性
顏色
氣味
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列哪一項敘述是正確的?
所有的水溶液都具有導電性
具有顏色的水溶液都具有導電性
中性水溶液都具有導電性
能讓電路變成通路的水溶液具有導電性
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
為了避免觸電,下列哪一項做法正確?
在浴室中使用電器
用潮溼的手接觸電力開關
用潮溼的手將插頭插入插座
戴橡膠手套更換燈泡
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列哪一種物品有應用到發光二極體?
電風扇馬達
紅綠燈
汽車引擎
直排輪輪子
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