无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

<pre id="wlxt0"><strong id="wlxt0"></strong></pre>

單項(xiàng)選擇題

The urgency signal concerning the illness of persons on board ship is（）.

A.MAYDAY
B.PAN
C.SECURITE
D.ATTENTION

你可能感興趣的試題

單項(xiàng)選擇題

If you wished to transmit a message by voice concerning the safety of navigation，you would preface it by the word（）.

A.Mayday
B.Pan-pan
C.Securite
D.Safety

<em id="7a972"></em>

<dl id="7a972"></dl>

<ruby id="7a972"><small id="7a972"></small></ruby>

<pre id="7a972"><legend id="7a972"></legend></pre>

<ruby id="7a972"><output id="7a972"></output></ruby>

<ruby id="7a972"><small id="7a972"></small></ruby>