盐酸普鲁卡因
A．四氮唑比色法B．铁-酚试剂比色法C．异烟肼比色法D．气相色谱法E．碘量法下列药物可采用的含量测定方法为
参考答案：E
It’s reported that a plane with five people _______ crashed into the mountain several days ago.
A．on board
B．on the board
C．in board
D．in the board
当天燃气浓度处于爆炸限时，遇到火源会（）。
A、爆炸
B、燃烧
C、汽化
D、无反应
