电造给矿前的隔渣筛采用() ["A.自定中心振动筛","B.高频细筛","C.惯性振动筛","D.电振筛"]
某载重量7000t油船,船宽18m,其边舱宽度和双层底高度下列哪些是正确的?() ["A.距基线1.8m及以上边舱与舷侧壳板垂直的任何剖面处测得的距离W为0.9m;","B.双层底高度h为1.2m;","C.距基线1.5m处边舱宽度1.0m;","D.货油舱内吸阱凹入到由距离h所定义的双层底边界线下面,并且阱底与船底壳板之间距离为0.6m。"]
化工管路表面涂黄颜色表示管内物料是()。 ["水","蒸汽","氮气","氨气"]
化工管路表面涂绿颜色表示管内物料是()。 ["水","蒸汽","氮气","氨气"]
电造机分造过程主要取决于() ["A.电晕电流","B.电晕电压","C.电晕电极"]
隶书