Trong không gian Oxyz, đường thẳng $d:\left\{\begin{array}{l}x=2+t\\ y=-1+3t\\ z=3\end{array}\right.$ có một vectơ chỉ phương là

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  ____________ of the fact that she could not get the certification after her graduation she was employed.
  
  

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

  Ms Thuy doesn't mind taking care for disabled children.

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

  It took him a long time to get used to drive on the left.

• Choose the best answer for the following sentence:

  The road is _________ for the villagers to travel up and down.
   

• Choose the best answer for the following sentence:

  They informed that the flood __________ the children from ___________ to school.

   

• Choose the best answer for the following sentence:

  I cannot understand why Vinh __________ that he was jealous of me!
   

• Choose the best answer for the following sentence:

  Mai: ''What is the play for the theatre, television or radio?”

  Hung: “__________”
  
  

• Choose the best answer for the following sentence:

  Our bicycle has ___________, which meant we were late for school.
  
  

• Choose the best answer for the following sentence:

  The students in my class spend their break time to __________ about the new coming English teacher.
  
  

• Choose the best answer for the following sentence:

  This is the different website _________ the one she visited last night.