中国大学MOOC: The three kinds of coal desulfurization process are .
举一反三
- The three kinds of coal desulfurization process are ( ) A: Oxidative desulfurization(ODS) B: Biological desulfurization(BDS) C: Hydrodesulfurization(HDS)
- 中国大学MOOC: _____________ is the process of extracting coal from the ground.
- 中国大学MOOC: The three kinds of questions that give rise to persuasive speeches are questions of , questions of , and questions of .
- 中国大学MOOC: Three kinds of verb tenses are frequently used in English news headlines: present tense, future tense and present perfect tense.
- What are the three kinds of quotations?_