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31 tháng 10 2022

giúp với

 

 

31 tháng 10 2022

 

 

31 tháng 10 2022

20 là số hiệu nguyên tố của nguyên tử Calci (Ca).

31 tháng 10 2022

a. thu nhận thông tin,truyền thông tin,lưu trữ thông tin,xử lí thông tin

 

2 tháng 11 2022

WHAT ?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 tháng 11 2022

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