已知烧结矿和块矿含铁分别为47.55%,45.50%,熟料率95%,焦批6.0t,负荷3.8,料速10批/h,喷吹煤粉12.5t/h,试计算焦比、煤比、燃料比和综合焦比?(置换比0.7,Fe元素进入生铁98.4%,生铁含Fe92%)
鲁迅称赞《史记》文史价值的两句话是()。
既能行血,又能补血的药物是()。 ["川芎","赤芍","鸡血藤","阿胶","茜草"]
患者,男,25岁。4小时前被刀砍,伤及鼻和上唇,致上唇部分软组织完全离断,离体组织完好,患者目前应该在多久内到达医院就诊,尽量设法缝回原处() ["2h","3h","4h","5h","6h"]
卵巢未成熟型畸胎瘤为() ["转移性肿瘤","恶性肿瘤","交界性肿瘤","癌前病变","早期浸润癌"]
防爆设备下井前必须要做哪些检查?