激光辐射眼睛或皮肤时,如果超过了人体的最大允许照射量,就会导致组织损伤,当照射时间超 发布时间:2020-02-18 18:22 │ 来源:www.tikuol.com 题型:单项选择题 问题: 激光辐射眼睛或皮肤时,如果超过了人体的最大允许照射量,就会导致组织损伤,当照射时间超过l00s时,损伤效应主要为()。A.热效应B.光压效应C.光化学效应
题型:单项选择题 —We're going for a picnic next Sunday, and I'd like you to join us.—____________!I have to see my grandmother. She has beenill for two weeks.A.What a pity B.Good luck C.That’s all right D.Go ahead 查看答案