【单选题】对硝基苯甲酸乙酯还原为苯佐卡因时,使用的还原剂为 ( )。
【简答题】Socrates chief religious innovation, and one for which he was ultimately tried and condemned to death, was his ______that he received guidance from a spirit within him.
【判断题】 对硝基苯甲酸乙酯还原为苯佐卡因时,使用的还原剂为铁粉 /醋酸。 ( )。
【简答题】The chief disadvantage of pronouncing words while you read them is that it tends to tie reading speed to speaking speed, and the silent reading of most normal readers is nearly ______ as fast as their...
【判断题】 对硝基苯甲酸乙酯还原为苯佐卡因时,使用的还原剂为铁粉/氢氧化钠。 ( )。
【判断题】The chief Greek philosophers are Socrates, Plato and Aristotle.