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康軒防疫包試題精選
Quiz
•
Physics, Chemistry
•
8th - 9th Grade
•
Practice Problem
•
Hard
文宏 王
Used 3+ times
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25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
阿基用一把直尺，測量某物體的長度為31.20公分，則其中哪一個數字是估計而得？
3
1
2
0
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
100mL、25°C的水最多可溶解45克的硝酸鉀固體，欲使5克的硝酸鉀完全溶解於10mL的水中，須採取下列何種方式？
使用酒精燈加熱
使用玻璃棒攪拌
放入冰箱降溫
使用顆粒較細的硝酸鉀
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
偉芬聆聽學校的樂團表演，她可以很清楚的分辨出吉他和鼓的聲音，主要依靠吉他聲和鼓聲的何種差異？
音量
聲速
波形
頻率
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
佩蓉將某種液體在定壓下升溫至沸騰，沸騰的過程中該物質的溫度一直保持不變，由此判斷該液體必然屬於下列何者？
元素
化合物
純物質
混合物
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
質量45kg的田仲與質量38kg的孟輝參加區運會高臺跳水及跳板跳水賽，如圖所示。試問下列何種情況下所具有的重力位能最大？
田仲參加高臺跳水比賽時
孟輝參加高臺跳水比賽時
田仲參加跳板跳水比賽時
孟輝參加跳板跳水比賽時
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
小江將40克的食鹽加入100克的水中充分攪拌後，發現食鹽無法完全溶解，此時他又加了一些同溫度的水並充分攪拌，發現仍有少許食鹽沉澱，關於上述過程的敘述，何者正確？
加水後的食鹽水嘗起來較不鹹
加水後，食鹽水的濃度變小
食鹽水始終保持飽和狀態
若再繼續加水，沉澱的食鹽亦無法完全溶解
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於實像和虛像的敘述，下列何者正確？
實像不能由眼睛看見，虛像只能由眼睛看見
平面鏡僅能成虛像，透鏡僅能成實像
由光反射而成的是實像，折射而成的是虛像
實像可在紙屏成像，虛像不能在紙屏成像
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