[HH12. C3. 3. D01. a] Trong không gian với hệ tọa độ $Oxyz$ , cho đường thẳng $d:\frac{x+1}{-1}=\frac{y-2}{3}=\frac{z-1}{3}$ . Vectơ chỉ phương của đượng thẳng là

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Mark the letter A,B,C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions:

  Some bacteria are extremely harmful, but others are regular used in producing foods.  

• Mark the letter A,B,C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions:

  The letters written by the man was translating into Vietnamese by my sister.         

• Mark the letter A,B,C or D on your answer sheet to indicate the underlined part that needs correcting in each of the following questions:

  My bike, whom I had left at the gate, had disappeared.           

• Mark the letter A,B,C or D on your answer sheet to indicate the underlined part that needs correcting in each of the following questions:

  Some of the pictures he painted was sold for millions of dollars.  

• Mark the letter A,B,C or D on your answer sheet to indicate the underlined part that needs correcting in each of the following questions:

  If she had eaten fewer sweets, she would lose weight.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions:

  The number of students attending English courses at our university are increasing.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions:

  A number of the American Indian languages spoken at the time of the European arrival in the New World in the late fifteen century have become extinct.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions:

   A food additive is any chemical that food manufacturers intentional add to their products.

• Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions:

  A smile can be observed, described, and reliably identify, it can also be elicited and manipulated under experimental conditions.  

• Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions:

  We didn’t have many knowledge about physics.