【单选题】【消耗次数：1】
下列几种电磁辐射，哪种不具有电离辐射
①
A.中子射线
②
B.MRI中的RF电磁波
③
C.γ射线
④
D.软X射线
参考答案：
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【多选题】
放射性污染物主要变现为电离辐射，特点包含（）
①
A放射性剂量的大小只有辐射探测器方可探测
②
B射线的辐照具有穿透性
③
C放射性核素具有蜕变能力
④
D放射性活度只能通过自然衰变而减弱
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