题目

下列物质的用途主要不是由其化学性质决定的是  A．氮气用作保护气B．活性炭用于除去冰箱中的异味C．氢气作清洁燃料D．氧气用于炼钢 答案：B解析:略According to the ________ passed by the court, half of his possessions shall belong to his wife．A.banB.consequenceC.judgmentD.punishment