夏季施工暴风雨等恶劣天气的不确定性和突发性，需要及时收集（），及时采取有效的安全措施加强防范。
A.气象信息
B.调度信息
C.相关措施
参考答案：A
急性心肌梗死的病人出现高危早搏，治疗首选（）。
A.美西律（慢心律）
B.利多卡因
C.胺碘酮
D.倍他乐克
E.普鲁卡因酰胺
You are the first vessel to arrive at the scene of a distress. Due to the volume of traffic on the radio，you are unable to communicate with the vessel in distress. Which action should you take?（）
A.Switch to flag hoists
B.Broadcast "Seelonce Distress"
C.Broadcast "Charlie Quebec-Mayday-Quiet"
D.Key the microphone three times in quick succession
