Điện phân dung dịch nào sau đây, thì có khí thoát ra ở cả 2 điện cực (ngay từ lúc mới đầu bắt đầu điện phân)      

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Far more money is being spent on food than spent ten years ago.

• Find a mistake in the four underlined parts of the sentence and correct it:

  The TV company who’s contract is up for renewal is losing money.

• Find a mistake in the four underlined parts of the sentence and correct it:

  The boys were hiding between the bushes in the garden.

• Find a mistake in the four underlined parts of the sentence and correct it:

  He advised me please wear a wig if I didn’t want to be recognized.

• Choose one sentence that has the same meaning as the root one:

  "Don’t forget to bring the camera, will you?” she said to me.
  
  

• Choose one sentence that has the same meaning as the root one:

  I hope the weather will clear up. Then I’ll be able to go out.
  
  

• Choose one sentence that has the same meaning as the root one:

  The workmen finished, and then Mr. Jones came home.
  
  

• Choose one sentence that has the same meaning as the root one:

  The Mayor is opening the new theatre on Saturday.
  
  

• Choose one sentence that has the same meaning as the root one:

  He was exhausted, but he finished the marathon race.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  subsidy                   upper                    culture                       supportive