放射性核素示踪技术中用于标记的核素称为() A.示踪剂 B.指示剂 C.标记原子 D 发布时间:2018-02-07 21:35 │ 来源:www.tikuol.com 题型:单项选择题 A型题 问题: 放射性核素示踪技术中用于标记的核素称为()A.示踪剂B.指示剂C.标记原子D.分离剂E.催化剂
题型:单项选择题 A型题 —How was the concert last night?—It was so good. Though it nearly four hours, few people left early.A.coveredB.reachedC.lastedD.played 查看答案