远区回声过低,声像图不清楚时,应调节下列哪一项() ["A.增大检测深度","B.使用增益(TGC)补偿调节","C.减小增益","D.用变频探头扫查","E.调节监视器的显示"]
光线的屈折力取决于() ["A.两介质的折射率","B.光线入射的角度","C.光线折射的角度","D.光线在介质的吸收率","E.界面的曲率半径"]
男性淋病中下列哪一种类型较为少见() ["A.淋菌性尿道炎","B.附睾炎","C.淋菌性咽炎","D.淋菌性眼炎"]
有关远视眼的叙述以下哪些为正确() ["A.用凸透镜矫正","B.轻度如无症状不需矫正","C.如有视疲劳和内斜视,度数高者才戴镜矫正","D.中年以上远视者应戴镜矫正视力","E.在远距工作时不使用调节"]
最常与淋病伴发并导致迁延不愈的是() ["A.梅毒","B.尖锐湿疣","C.非淋菌性尿道炎","D.生殖器疱疹"]
试述淋病的传染途径。