When carbon is added to iron in proper _____ the result is steel.
.rates
B、densities
C、proportions
D、thicknesses
发布时间：2025-05-08 21:45:43
请在 下方输入 要搜索的题目：
推荐参考答案 (
由 快搜搜题库 官方老师解答 )
答案：参考答案：C
相关试题
- 1.When carbon is added to iron in proper _____ the result is steel.
- 2.An alloy of iron with more than 2% carbon is called .
- 3.Each result reported should not be followed by a proper discussion.（ ）
- 4.When is the carbon monoxide level at its highest?
- 5.When iron filings are wound on the drill, stop the machine in time and remove it ( ).
- 6.When sending flowers as gifts in Russia, which of the following is proper?
- 7.What happens to the solubility of PbCl2(s) when 0.1 M NaCl is added?
- 8.when they smell the carbon dioxide or CO2 that living creatures (2)______ out.
- 9.when designing cast iron beam, the section with neutral axis () should be adopted.
- 10.Which is the proper place for you to buy bulk items when driving?______
