管道燃气经营企业应按照规定定期更新、检定燃气计量表。
参考答案：对
---Would you like _____________ more cakes?
---No, thanks. I am full. I don't want ____________ cakes. [ ]
A. some, any
B. any, some
C. some, some
D. any, any
爆炸可分哪几种？
any