后鼻孔填塞纱球的底部留置丝线主要作用是() ["固定纱球","取出纱球时牵引用","填塞纱球时牵拉纱球用","固定于前鼻孔牵拉纱球用","以上均不正确"]
遗传性出血性毛细血管扩张症属于() ["常染色体显性遗传病","常染色体隐性遗传病","X连锁显性遗传病","X连锁隐性遗传病","Y连锁遗传病"]
乳腺癌X线钼靶拍片的特征表现是()征,当出现颗粒细小、密集的()钙化点时,恶性可能更大。
鼻中隔偏曲的嵴处反复出血,经用油纱填塞前鼻孔无效时,最适宜的治疗是() ["后鼻孔填塞","硝酸银局部烧灼","鼻中隔黏膜划痕","鼻中隔黏膜下矫正术","颈外动脉结扎术"]
鼻出血需结扎颈外动脉时,结扎部位宜在() ["颈总动脉分叉处与甲状腺上动脉之间","甲状腺上动脉与舌动脉之间","舌动脉与面动脉之间","面动脉与上颌动脉之间","上颌动脉与颞浅动脉之间"]
在事故原因分析时,通常要明确哪些内容?