1956年，中国（）运动员陈镜开打破世界纪录，为中国运动员创造的第一个世界纪录。

A、跳水

B、田径

C、举重

D、跳高

Which signal is detected as originating from a SART?（）

A.The Morse code distress series S-O-S repeated 3 times followed by DE and the vessel's call sign

B.A line of blip code on a radar screen outward from the SART's position along its line of bearing

C.A line of blip code on a radar screen inward from the SART's position to its own ship along its line of bearing

D.None of these