2岁以内小儿颅脑超声扫查的最常用窗为() ["颞部","后囟","前囟","眼眶","前额"]
我国最大的天然渔港是哪个?
超声诊断睾丸扭转的主要依据是() ["睾丸肿大","睾丸内出现异常暗区","睾丸内无血流信号或血流信号减少","精索呈麻花征","睾丸鞘膜积液"]
隐睾大多位于() ["腹腔","腹膜后","腹股沟","阴茎根部","大腿内侧"]
成年人最常见的睾丸肿瘤是() ["精原细胞瘤","胚胎瘤","恶性畸胎瘤","淋巴肉瘤","间质细胞肉瘤"]
引起上消化道大出血常见的病因是()、()、()、()、()。