共析鋼的碳含量是多少？
A.高於0.8%
B.0.8%
C.低於0.8%
正確答案：0.8%
題目：共析鋼的碳含量是多少？
關鍵字：智慧樹
相關試題
1.Composite materials have been in existence for many centuries.The earliest man-made composite materials were straw and mud combined to form bricks for building construction.
2.A composite material is a material made from two or more constituent materials with significantly different physical or chemical properties that， when combined， produce a material with characteristics different from the individual components.
3.¸´ºÏ²ÄÁϵÄÔöÇ¿Ïà²ÄÁ϶¼ÊÇ¿ÅÁ£×´µÄ¡£
4.陶瓷材料隻能作為復合材料的增強相。
5.作為復合材料的增強相材料形態可以是纖維、顆粒或晶須等。
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