【单选题】10°C时,滴定用去26.00mL0.1mol/L标准溶液,该温度下1L0.1mol/L标准溶液的补正值为+1.5mL,则20°C时该溶液的体积为()mL
【单选题】—We want someone to design the new art museum for us. —______ the young fellow have a try?
【单选题】The present system no longer meets the changing needs of our customers; we have to make a(n) ____ management system. [ ]
【单选题】We have received orders ______ US$1,000,000 since the new product was introduced to the market.
【单选题】John talked with me for about an hour yesterday. Never _______ him talk so much.
【单选题】If the prediction for the earthquake ________ more accurate, we would have been more prepared and many more lives would have been saved.
【简答题】10吨煤,用去 4 5 ,用去______吨煤,还剩______煤.
【单选题】采用滴定分析法测定药物含量时用去滴定液20.00ml,滴定管的读数0.02ml,那么相对误差是
【单选题】---- Do you know Jack well? ---- Certainly, we _________ friends since ten years ago.