患者杜某,女,33岁,1年前开始感觉双侧下肢发麻,酥酥地如同过电,仍能照常劳动。3月前开始在双下肢发麻的基础上出现四肢一阵阵剧烈疼痛,如电击样,每天发作多次,因而不敢活动,卧床不起。1个月前开始感觉双下肢无力,排尿困难,但不需导尿。查体:脑神经无异常,眼底正常,四肢力弱,感觉正常,双侧Babinski征(+)。门诊拟诊脊髓肿瘤收入院。患者修正诊断应为()
A. 脊髓肿瘤
B. 癫痫
C. 癔病
D. 多发性硬化
E. 脊前动脉综合征
During an annual FCC inspection().
All required documents and publications may have to be produced
B. Licensed GMDSS radio operators may be required to demonstrate equipment competencies
C. All required equipment must be fully operational
D. All of the above