铁口跑大流怎样处理?
参考答案:
铁流过大时,应立即减风降压出铁,减慢出铁速度,同时扒开预先备好的安全出铁沟,用黄沙加高主沟两边帮及沙坝等。
I can remember very few ______ when he had to cancel his plans because of poor health.
A.situations
B.conditions
C.occasions
D.circumstances
旱船滑移法适合于路面不平的情况下使用,其最大的设备质量一般可达50t。