题目: 在配制土酸时需采用塑料容器,配液时应按()顺序加入。A、先浓盐酸,后蒸馏水再浓氢氟酸B、先浓氢氟酸,后蒸馏水再浓盐酸C、先蒸馏水,后浓盐酸再浓氢氟酸D、先浓盐酸,后浓氢氟酸再蒸馏水 答案: 参考答案:C
题型:选择题 .—________the population of Shandong Province?—I can't say exactly, but I know it ________ about 80 million.A.What's; has large populationB.How much is; has the population ofC.How many is; has a large populationD.What's; has a population of 查看答案