小美要防止鐵釘生鏽,她怎麼做會比較適當呢?(①將鐵釘浸在水中②在鐵釘外層塗醋③放在乾燥的盒子裡④將鐵釘放在廁所中)。
6 下自然期中考複習

Quiz
•
Computers
•
6th Grade
•
Medium
Nancy Hsiao
Used 10+ times
FREE Resource
38 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將鐵釘浸在水中
在鐵釘外層塗醋
放在乾燥的盒子裡
將鐵釘放在廁所中
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將鋼棉浸泡過下列哪一個杯子的溶液後拿出,鋼棉生鏽的速度最快呢?(①裝純水的杯子②裝醋的杯子③裝水的杯子④都一樣快)。
裝純水的杯子
裝醋的杯子
裝水的杯子
都一樣快
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
室外的鐵欄杆會塗上一層油漆,其主要的目的是什麼?(①減少熱輻射②防止蚊蟲靠近③比較好看④隔絕水和空氣的接觸)。
減少熱輻射
防止蚊蟲靠近
比較好看
隔絕水和空氣的接觸
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
鐵製品生鏽會用掉哪一種氣體?(①氧氣②氫氣③二氧化碳④氮氣)。
氧氣
氫氣
二氧化碳
氮氣
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
黴菌喜歡生長在什麼樣的環境?(①低溫的環境② 溫暖、潮溼的環境③乾燥、高溫的環境④真空的環境)。
低溫的環境
溫暖、潮溼的環境
乾燥、高溫的環境
真空的環境
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
真空包裝的食品,主要是利用什麼原理保存食物?(①高溫殺菌②低溫保鮮③保持潮溼④隔絕空氣)。
高溫殺菌
低溫保鮮
保持潮溼
隔絕空氣
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
使用槓桿工具時,下列哪一個情況會省力?
施力臂小於抗力臂
施力臂等於抗力臂
施力臂大於抗力臂
使用槓桿工具都會省力
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