
初三下册第9+10+11章测试

Quiz
•
Science
•
9th Grade
•
Medium
沈宛慧(古晋一中) 沈宛慧(古晋一中)
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50 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2.
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6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
硬水加热后会形成水垢,影响传热性能。这是因为硬水在加热的过程中会形成( )
①碳酸钙 ②硫酸钙 ③氢氧化镁 ④氧化镁
②③
①④
①③
②④
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
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