某检验员要测定某种面粉的水分含量,用干燥恒重为24.3608g的称量瓶称取试样2.8720g,置于100 °C 的恒温箱中干燥3h后,置于干燥器内冷却称重为27.0328g ; 重新置于100 °C 的恒温箱中干燥2h , 完毕后取出置于干燥器冷却后称重为26.9430g ; 再置于100 °C 的恒温箱中干燥2h , 完毕后取出置于干燥器冷却后称重为26.9422g。问被测定的面粉水分含量为多少?
【简答题】Saturday, 17 th March Today I got my dream job in New York! However, it’s far away from my home town and I’ve never visited New York before. Yesterday I took the train here and one of my workmates...
【单选题】--I stayed at a hotel while in New York. ---Oh, did you? You _______with Barbara. A. could have stayed B. could stay C. would stay D. must have stayed
【简答题】阅读理解。 Saturday, 17th March Today I got my dream job in New York! However, it's far away from my home town and I've never visited New York before. Yesterday I took the train here and one of my workmate...