题型:判断题 A team, ________two doctors and three policemen, was sent to search for the lost explorers. [ ]A. consisting of B. consists ofC. consisted of D. to be consisted of 查看答案
题型:判断题 (7分)6.02×1024个Na+约含 mol Na+,其质量为 g;4.5molCH4约含有 个CH4,其质量为 g;3.01×1023个SO42-约含 molSO42-,其质量为 g;49gH2SO4约含有 个H,共含有 mol原子。 查看答案