【简答题】Translate the folloiwng rule. Each baseball team has nine players. The pitcher of one team throws the ball to a batter from the other team. The batter attempts to hit the ball. If he misses, it is cal...
【简答题】相同质量的Fe 3+ 和Cd 2+ (A r (Fe)=55.85,A r (Cd)=112.4),各用显色剂在同样体积溶液中显色,用吸光光度法测定,前者用2cm吸收池,后者用1cm吸收池,测得的吸光度相同,则两有色络合物的摩尔吸光系数( ) (A) 基本相同。(B) Fe 3+ 约为Cd 2+ 的两倍。 (C) Cd 2+ 约为Fe 3+ 的两倍。(D) Cd 2+ 约为Fe 3+ 的四倍...