患者女，50岁，因“头痛、头晕（非旋转性）伴双膝关节阵发性疼痛1个月”来诊。1年前有右输尿管结石病史，已治愈。查体：虚弱貌，右颈前外侧饱满，右胸锁乳突肌内侧可扪及约3cm×3cm的质韧肿物，轻压痛，随吞咽上下活动。

对患者的诊断有重要参考意义的检查有（）

A.血、尿、粪常规

B.胸部X线片

C.骨X线片

D.血清钙、磷

E.24h尿钙、磷排泄量

F.颈部B型超声、CT

In radiotelephone communications，the prefix PAN-PAN indicates that（）.

A.a ship is threatened by grave and imminent danger and requests immediate assistance

B.a calling station has an urgent message about the safety of a person

C.the message following the prefix will be about the safety of navigation

D.the message following is a meteorological warning