水的淨化
Quiz
•
Science
•
7th Grade
•
Practice Problem
•
Hard
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
天然水不適宜直接飲用,因為
(1) 它的味道很差。
(2) 它含有的微生物能致起疾病。
(3) 它含有沙和泥。
只有(1)和(2)
只有(1)和(3)
只有(2)和(3)
(1)、(2)和(3)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪項不能用過濾法移除?
泥
色素
微生物
以上皆否
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪種方法能除去水中的可溶雜質?
沉積法
加氯消毒法
蒸餾法
過濾法
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪些有關食水供應的敍述是不正確的?
(1) 雨水是香港食水的主要來源。
(2) 天然水會先經濾水廠處理,才輸送給市民使用。
(3) 我們不需要節約用水,因為香港有無限的食水供應。
只有(1)和(2)
只有(2)和(3)
只有(1)和(3)
(1)、(2)和(3)
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪項可溶的雜質能在天然水中找到?
沙
大腸桿菌
鹽
泥
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下哪種雜質能被過濾法除去?
較大的不可溶雜質
較大的可溶雜質
細小的可溶雜質
微生物
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
在過濾法中,被濾紙隔開的雜質稱為_______________。
濾液
殘餘物
沉積物
泥
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