熄焦时需将焦炭温度冷却到250℃以下,可采取的措施有()。
A、循环气体量增加
B、排焦量增加
C、降低进入干熄炉循环气体温度
D、减少排焦量
参考答案:A, C, D
Only after I read the book _______ why she devoted all her life to medical work for
Chinese women and children.
A.I understood
B.had I understood
C.did I understand
D.I had understood
何谓文以载道?"