Một loại hợp chất của sắt trong đó có nguyên tố C (2% - 5%) và một số nguyên tố khác: 1 - 4% Si; 0,3 - 5% Mn; 0,1 - 2% P; 0,01 - 1% S. Hợp kim đó là:

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Actually, today I feel ___________ than I did yesterday.
   

• Choose the best answer for the following sentence:

  This is _____________ interesting exhibition I’ve ever visited.
   

• Choose the best answer for the following sentence:

  Tom is the shortest of ___________ in the Smith family
   

• Choose the best answer for the following sentence:

  That is _____________ lecture we have ever listened to.
   

• Choose the best answer for the following sentence:

  No sooner had he gone to bed, he fell ___________.

   

• Choose the best answer for the following sentence:

  Susan gives me more help than ____________.

• Choose the best answer for the following sentence:

  Jenny is taller than Rose means __________.
   

• Choose the best answer for the following sentence:

  China has a ____________ population than ____________ country
  
  

• Choose the best answer for the following sentence:

  I wonder why _____________ the worse I seem to feel.

• Choose the best answer for the following sentence:

   "How dark your sister’s hair is!'' '' It's _____________ mine when I was ay her age.''