97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

<sup id="ofm48"><pre id="ofm48"><div id="ofm48"></div></pre></sup>

<pre id="ofm48"><legend id="ofm48"></legend></pre>

<pre id="ofm48"><legend id="ofm48"></legend></pre>

單項選擇題

A Coast Guard radiotelephone message about an aid to navigation that is off station is preceded by the word（）.

A.PAN-PAN
B.MAYDAY
C.SOS
D.SECURITY

你可能感興趣的試題

單項選擇題

A radiotelegraph message commencing with XXX has the same meaning as a message sent by the radiotelephone commencing with（）.

A.TTT
B.SOS
C.The spoken word URGENCY
D.The spoken word PAN

單項選擇題

Messages concerning weather conditions transmitted by radiotelephone are preceded by（）.

A.MAYDAY
B.PAN-PAN
C.SECURITE
D.SOS

<dl id="9ceqv"></dl>

<ruby id="9ceqv"><xmp id="9ceqv"></xmp></ruby>