什么叫连续铸钢?
参考答案:
连续铸钢是将钢水连续不断地浇注到水冷结晶器内,并开始凝固结晶,然后由拉坯机把铸坯从结晶器中拉出,再喷水冷却,完全凝固成钢坯的工艺。
I recorded the professor’s speech on my cellphone _____ I could listen to it several times later.
A.in case
B.now that
C.even though
D.so that
老年人服用安定易产生蓄积是因为()。
A.体内脂肪较多
B.吸收完全
C.肝中代谢慢
D.肾的排泄少