單項選擇題下列()含碳量是白口鑄鐵。

A.C%=0.77%
B.C%=1.3%
C.C%=2.35%
D.C%=0.35%


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1.單項選擇題下列()含碳量是工業(yè)純鐵。

A.C%=0.02%
B.C%=1.3%
C.C%=0.15%
D.C%=0.35%

3.單項選擇題鐵素體在727℃時含碳量(C%)是()

A.C%=2.11%
B.C%=1.3%
C.C%=4.3%
D.C%=0.0218%

4.單項選擇題奧氏體在727℃時含碳量(C%)是()

A.C%=2.11%
B.C%=0.77%
C.C%=4.3%
D.C%=6.69%

5.單項選擇題奧氏體在1148℃時含碳量(C%)是()

A.C%=2.11%
B.C%=1.3%
C.C%=4.3%
D.C%=6.69%