判斷題原子吸收分光光度計(jì)使用時(shí),點(diǎn)火的順序?yàn)橄乳_助燃?xì)?,后開燃?xì)猓魂P(guān)閉時(shí),先關(guān)燃?xì)猓箨P(guān)助燃?xì)狻?