患儿6个月,生后即有左侧上唇自红唇到鼻底处全层裂开。手术若采用“旋转推进法”,其缺点是() ["患侧唇高术后常嫌不足","切除较多上唇组织","鼻小柱歪斜畸形难以矫正","有损正常人中嵴形态","鼻底封闭不好"]
玉米基肥以()为主。 ["有机肥","氮肥","磷肥","复合肥"]
羊水过少,是指妊娠晚期羊水量少于多少毫升() ["200","300","400","500","600"]
路线纵断面图反映路线在纵断面上的()及尺寸 ["A.长度 ","B.形状 ","C.位置 ","D.高度"]
患者,男,30岁。头部外伤6小时,伤后有一过性意识障碍,3小时后再次出现昏迷。检查左颞部头皮血肿,左瞳孔散大。CT扫描显示左侧颞叶硬膜外血肿。首选治疗方案() ["A.应用止血药
","B.应用脱水药
","C.钻孔引流术
","D.应用皮质激素类药物
E.甘露醇脱水准备开颅"]
绕曲线