最常见的"颞下窝原发肿瘤"为() ["A．鼻咽癌","B．腮腺肿瘤","C．脑膜瘤","D．肉瘤或未分化癌","E．淋巴瘤"]
早产儿多见，生后6小时内出现呼吸困难()差异性紫绀()胎儿缺氧所致() ["A．NRDS","B．MAS","C．PPHN","D．湿肺","E．GBS感染"]
关于鼻咽癌的描述，哪项正确() ["A．多为腺癌","B．咽隐窝小肿块矢状位显示最好","C．T2加权像对早期病变显示最敏感","D．横轴位T1加权像对病变显示最好","E．咽旁间隙受侵矢状位显示最好"]
普鲁卡因青霉素之所以能长效，是因为() ["A．改变了青霉素的化学结构","B．抑制排泄","C．减慢了吸收","D．延缓分解","E．加进了增效剂"]
在鼻咽上部横轴位SE-T2加权图像所示结构中，以下哪项描述正确() ["A．咽鼓管咽口在圆枕后方","B．咽鼓管圆枕显示清楚","C．鼻咽腔左右不对称","D．咽鼓管隐窝在圆枕前方","E．前方可见软腭"]
NRDS多见于()BPD多见于()新生儿硬肿症多见于()
