肺囊肿继发感染时可出现下列哪项征象() ["半月征","双弓征","水上浮莲征","轨征","兔耳征"]
已婚女性,29岁。突发性脐周痛,1小时后局限于右下腹,伴呕吐。查体:右下腹压痛,血常规:白细胞11×109/L,N88%,尿常规:白细胞0-1个/HP,红细胞0~2个/HP,询问病史:月经过期10天。此时最合适的处理是() ["A.腹腔穿刺","查妊娠试验,请妇科会诊","腹X线平片检查","静脉肾盂造影检查","进行血沉检查及OT试验"]
恙虫病的体征包括() ["焦痂或溃疡","肝、脾大","淋巴结肿大","结膜充血","皮疹"]
卵巢癌的主要转移方式是(). ["血行转移","淋巴道转移","直接外侵","种植转移","沿生殖道播散"]
男性,60岁,有冠心病史,因常发生晕倒而住院,首选检查为() ["心电图","心脏彩超","头颅CT","H0lter","胸部CT"]
什么是总线标准?为什么要指定总线的标准?