牙本质中的无机盐按重量和体积算各占多少()
A.70%,45%
B.75%,35%
C.80%,30%
D.90%,50%
E.98%,20%
参考答案:A
根据提示,使用单词的正确形式填空。
1. Miss Zhao is our ___________ (数学) teacher.
2. Mum gets me a __________(双) of shoes.
3. I have got an _________(叔叔) and he lives in London.
4. I ofen have some __________(potato), rice and meat for dinner.
5. Does Lily usually __________(listen) to music?
储藏时间超过1年的粮食,宜对粮堆底层和上层30cm厚的粮食施用(),按标准剂量施用。
A.食品级惰性粉
B.磷化铝片
C.溴甲烷
D.防护剂