含铁原料根据其生产方式为铁精矿（）及冶金、化工的铁副产品和粉尘等。
参考答案：富铁矿粉
She always does very well in the English exams. But she can understand VOA Special English.
A．always
B．hardly
C．already
D．easily
直放站近、远端机运行状态检查周期为（）
A.1次/天
B.1次/周
C.1次/月
D.1次/季
