在Fe-Fe3C相图中，钢与铁的分界点的碳质量分数为2%。
物流服务项目的运输方式中，具有运送速度快、在途时间短、货物安全性高、对包装的要求低等优点的是()运输。A．铁路B．航空C．管道D．公路
A.The man is generous with his good comments on people.B.The woman is unsure if t
A. The man is generous with his good comments on people.
B. The woman is unsure if there will be peace in the world.
C. The woman is doubtful about newspaper stories,
D. The man is quite optimistic about human nature.
A.She gets angry with delays of the train. B.She is willing to wait for the next
A. She gets angry with delays of the train.
B. She is willing to wait for the next train.
C. She doesnt understand what the man says.
D. She is happy to talk with the man.
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