问题
单项选择题
《电离辐射防护与辐射源安全基本标准》（GB18871-2002）适用于实践和干预中人员所受（）的防护和实践中源的安全。
A.电离辐射照射
B.辐射源
C.危险货物
答案
参考答案：A
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《电离辐射防护与辐射源安全基本标准》（GB18871-2002）适用于实践和干预中人员所受（）的防护和实践中源的安全。
A.电离辐射照射
B.辐射源
C.危险货物
参考答案：A
选择所给词或短语并用其正确形式填空
...but I’m pretty healthy. I __小题1:__ every day, usually when I come home from school. My eating habits are pretty good. I try to eat a lot of vegetables. I eat fruit and drink milk every day. I never drink _小题2:____.Of course, I love junk food too, and I eat it two or three times a week. Oh, and I _小题3:___ nine hours every night. So you see, I look after my health.And my _小题4:__ lifestyle helps me get good grades. Good food and exercise help me to study _小题5:____. |