
6下自然U2-2
Authored by Anonymous Anonymous
Physics
6th Grade
Used 1+ times

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水會讓鐵製品生鏽,因此保持乾燥可以延長鐵製品的使用期限。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
可以在鐵窗的表面塗上一層油漆以防止生鏽。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
生鏽的鐵製品結構會變得脆弱,會影響使用上的安全。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
銅器接觸空氣氧化後,就會在表面上呈現灰白色的物質。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
鐵窗、鐵門每隔一段時間就要重新塗油漆,才能有效的防鏽。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
只要將鐵製品隔絕水,就可以達到防鏽的目的了。
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將鐵製的迴紋針外面再加一層塑膠套包覆,迴紋針就不容易生鏽了。
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