Đường thẳng vuông góc với mặt phẳng (P) khi:  

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Nowadays, more and more young people want to have a university _________ .
  
  

• Choose the best answer for the following sentence:

  He took _____________ the position that his father had obtained at the college.

• Choose the best answer for the following sentence:

  Tran Hieu Ngan was the first Vietnamese athlete ____________ an Olympic medal.
  
  

• Choose the best answer for the following sentence:

  After it ____________ dry for two months, it rained heavily last night.
  
  

• Choose the best answer for the following sentence:

  When I ______________ to visit him, he ________________ to work.
  
  

• Choose one sentence that has the different meaning to the root one:

  Her living conditions were difficult. However, she studied very well.
  
  

• Choose one sentence that has the different meaning to the root one:

  She likes sports. She likes reading.
  
  

• Choose one sentence that has the different meaning to the root one:

  She met Pierre in 1894 and in the following year they were married.
  
  

• Choose the best answer for the following sentence:

  By the time the boss returned, _______________.
  
  

• Choose the best answer for the following sentence:

  ___________ Lan had turned off the light.