Which of the following is the most important cast iron commercially?
来源:百度知道 编辑:UC知道 时间:2024/09/23 09:30:16
a.ductile cast iron
b.gray cast iron
c.malleable iron
d.white cast iron
b.gray cast iron
c.malleable iron
d.white cast iron
问这个问题为什么要用英文啊?我开始还以为跟英文有关或作翻译呢!~
“下列各项哪个是最重要的铸铁商业?
A 易延展的铸铁
B灰色铸铁
C有延展性的铁
D白色铸铁”
有点抱歉这个我不太清楚哦
我对这些商业一点也不熟悉~~
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