题型:问答题 简答题 Please get someone _____ the washing machine. I want to get it _____ as soon as possible.A.to repair;to be repairedB.repair;repairedC.to repair;repairingD.to repair;repaired 查看答案
题型:问答题 简答题 下列叙述正确的是A.1 mol·L-1NaCl溶液含有NA个Na+B.10 mL质量分数为98%的H2SO4用水稀释至100 mL,H2SO4的质量分数应大于9.8%C.配制240 mL 1 mol·L-1的NaOH溶液需称NaOH固体的质量为9.6 gD.配制1 mol·L-1的H2SO4溶液时,将量取的浓H2SO4放入容量瓶中加水稀释 查看答案