碳在固体钢中的存在形式为固溶体和()。
参考答案:碳化物
Which of the following is NOT true about the new capital according to the report a. It’s in the center area of South Korea. b. It has excellent transport and environmental conditions. c. The relocation will cost $94 million. d. It is not named yet.
土壤污染的防治?