问题
单项选择题
分子式为Fe3O4的铁矿石称为（）。
A、赤铁矿
B、磁铁矿
C、菱矿
D、褐铁矿
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
分子式为Fe3O4的铁矿石称为（）。
A、赤铁矿
B、磁铁矿
C、菱矿
D、褐铁矿
参考答案：B
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