题型:名词解释 Let's _____the books. [ ]A. to go and find B. to go and to find C. go and find D. go and go find 查看答案
题型:名词解释 镁、锌合金粉末7.7g恰好与一定质量20%的稀硫酸完全反应,将反应后的溶液蒸发,经处理后得到不含结晶水的固体22.1g,则反应中生成氢气的质量为[ ]A.0.1gB.0.2gC.0.3gD.0.4g 查看答案