题干

铁是一种常见的金属.下列有关铁的叙述正确的是(   )

A:生铁和钢的主要成分是碳

B:铁的冶炼是用一氧化碳将单质铁转化为铁的氧化物

C:焊接铁制品前常用稀盐酸清除表面的铁锈

D:防止铁制品生锈通常采用在其表面抹食盐水、涂油或刷油漆等方法

上一题 下一题 0.0难度 选择题 更新时间:2019-01-01 07:57:06

答案(点此获取答案解析)

C

同类题4

阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。(每小题2分)

A

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