在离心泵单元操作中当储罐V101液位小于()打开V101泄液阀VD10 ["10%","50%","100%","80%"]
在离心泵单元操作中当储罐V101液位小于()时关闭P101A泵出口阀VD04 ["5%","10%","15%","20%"]
核聚变的燃料则是()。 ["A、钚","B、氘","C、氚"]
对于核裂变,核燃料是() ["A、铀","B、钚","C、氘"]
我国冶金行业300m3级高炉使用的鼓风机大多属于()风机。 ["A.单级悬臂式","B.轴流式","C.多级离心式"]
催化裂化采用的四机组是(),(),(),()。