惊厥型氧中毒发生的原因可能是()
A.压力在0.25MPa上
B.脑内酪氨酸生成减少
C.脑内H2O2浓度升高
D.常压下持续吸氧超过8小时
参考答案:A, B, C
根据句意和首字母提示,写出单词的正确形式,每空一词。
1. I'm from C _____ and I'm Chinese.
2. My name is Tom Green. Green is my f _____ name.
3. Mr Zheng has a s _____ and a daughter. They are good children.
4. His brother is a d _____ and he works at a hospital.
5. These are my p _____ . My father and mother are teachers at a school.
硅酸乙酯水解液涂挂包埋时,干燥箱中应放入哪种干燥剂()。
A.浓硫酸
B.浓盐酸
C.浓硝酸
D.氨水
E.生石灰