根据液压控制阀在系统中的作用不同,可分为方向控制阀、压力控制阀、()三类。
肾上腺区示有含脂肪性肿块,边缘整齐,内有钙化,CT示有轻度增强,应首先诊断为() ["肾上腺腺瘤","血管平滑肌脂肪瘤","肾上腺纤维瘤","髓样脂肪瘤","脂肪瘤"]
下列结果不符合溶血性贫血的是:() ["网织红细胞增加","骨髓幼红细胞增加","尿中尿胆原排泄增加","血中非结合胆红素增加","血清结合珠蛋白增加"]
在缺血缺氧期导致微血管发生强烈痉挛的有() ["儿茶酚胺","血栓素","血小板活化因子","缓激肽","白三烯"]
肾输尿管结石首选的筛检方法为() ["A.B超","B.CT","C.腹部平片","D.IVP","E.MRI"]
质点在电磁波作用下产生散射时,散射能量在空间的分布是()。