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五上第三單元

Authored by 吳俊德 吳俊德

Science

5th Grade

Used 1+ times

五上第三單元
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90 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

當燃燒的蠟燭蓋上廣口瓶,經過一段時間燭火會熄滅,這是因為沒有充足的氣體可以幫助蠟燭燃燒。

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2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

食品包裝裡會充滿氧氣,可以避免食品壞掉。

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3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

電線短路是近年來家庭火災的主要原因之一。

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4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

燃燒三要素是有可燃物、有二氧化碳和達到燃點,缺少任何一個條件就無法燃燒。

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5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

小廷發現校園裡的盪鞦韆長時間在戶外受到日晒和雨淋之後,有些部位開始生鏽變成棕色。

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6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

爸爸用菜刀切完青菜之後,將清洗過的菜刀擦乾,可以避免菜刀生鏽。

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7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

鋼絲絨球在生鏽前後,外觀都沒有變化。

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