【单选题】已知Al为正三价,阿伏加德诺常数为6.02×10的23次方,铝摩尔量为26.98,质量1g的Al中的价电子数量为( )。
【简答题】Patents, copyrights, trademarks, and goodwill have no physical form, called __ assets.
【多选题】Copyrights are exclusive legal rights of _________________ to publish and dispose of their work as they see fit.
【单选题】已知Al为正三价,阿伏加德诺常数为6.02×10∧23(10的23次方),铝摩尔量为26.98,质量1g的Al中的价电子数量为( )。
【判断题】Copyrights have no time limits.
【单选题】已知Al为正三价,阿伏加德诺常数为6.02×1023,铝摩尔量为26.98,质量1g的Al中的价电子数量为( )。