临床有慢性肾盂肾炎表现，而尿培养阴性，为了确定尿中有无原浆型菌株存在，应该() ["A．取清晨第一次尿作培养","B．尿标本应1小时内送培养","C．作尿低渗培养","D．作尿等渗培养","E．作尿高渗培养"] 与系统性红斑狼疮有关的发病因素是() ["A．遗传素质","B．慢性病毒感染","C．肿瘤","D．阳光或紫外线照射","E．性激素"] 关于慢性肾盂肾炎实验室检查，下列哪项是错误的() ["A．轻度蛋白尿","B．白细胞管型","C．在膀胱冲洗后的尿中也可见到细菌","D．尿浓缩功能障碍","E．酚红排泄试验常正常"] 关于肾盂肾炎，下列哪项是错误的() ["A．孕妇易感染","B．多为上行感染","C．大肠杆菌感染常见","D．尿大肠杆菌菌落计数超过1万/ml","E．尿沉渣涂片找细菌对及时选择用药有意义"] 下列不属于弥漫性结缔组织病的有() ["A．骨性关节炎","B．系统性硬化病","C．银屑病关节炎","D．类风湿性关节炎","E．痛风"] 关于肾结核和肾盂肾炎的鉴别要点.下列哪项是错误的()