发生溢流后,采用硬关井的操作程序,会对地层产生()现象。
参考答案:液击
用所给词的正确形式填空。
1. The little boy fell off the tree and _____ (hurt) himself seriously.
2. She died after a long _____ (ill).
3. Doing eye exercises _____ ( be) good for your eyes.
4. Reading _____ (make)me happy.
5.There are many _____ (different)between the countryside and the big city.
抗氧化剂丁羟甲氧苯(BHA)适合的药液为()
A.弱酸性药液
B.乙醇溶液
C.碱性药液
D.非水性药
E.油溶性维生素类(如维生素A、D.制剂