Điện trở đặc trưng cho khả năng cản trở dòng điện. Điện trở càng lớn thì khả năng dẫn điện của kim loại càng giảm. Cho 4 kim loại X, Y, Z, T ngẫu nhiên tương ứng với Ag, Al, Fe, Cu. Cho bảng giá trị điện trở của các kim loại như sau: Y là kim loại         

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Asia and Africa are the two biggest _____________.
   

• Choose the best answer for the following sentence:

  Our country needs is a long-term policy for investment in science and ____________.

   

• Choose the best answer for the following sentence:

  The noise in big cities is ____________ in small town.
  
  

• Choose the best answer for the following sentence:

  She is _____________ a novelist.
  
  

• Choose the best answer for the following sentence:

  Los Angeles and San Francisco are ____________ on the West Coast.
  
  

• Choose the best answer for the following sentence:

  There were ___________ a thousand people there buying tickets.
  
  

• Choose the best answer for the following sentence:

  It was _____________ I expected.
  
  
  

• Choose a word that has different stress pattern:

  neighbor                   extend                   resource                  comprise

• Choose the best answer for the following sentence:

  It was Ptolemy, a / an ______________, who propounded that the Earth was the center of the universe.

• Choose the best answer for the following sentence:

  The area ____________ New York to the south of Houston Street is known as Soho.