电磁辐射对人体有很大危害,可造成失眠、白细胞减少、免疫功能下

电磁辐射对人体有很大危害,可造成失眠、白细胞减少、免疫功能下降等。按照有关规定,工作场所受电磁辐射强度(单位时间内垂直通过单位面积的电磁辐射能量)不得超过0.5W/m2。若某小型无线电通讯装置的电磁辐射功率是1.0W,则至少距该装置多远以外才是安全的?

A.0.4m以外                                   B.0.8m以外

C.1.0m以外                                   D.1.2m以外

答案

A

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