99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

單項選擇題

You should plot your dead reckoning position（）.

A.when you obtain an estimated position
B.only in piloting waters
C.at every speed change
D.All of the above are correct

你可能感興趣的試題

單項選擇題

You should plot your dead reckoning position at（）.

A.every fix or running fix
B.every course change
C.every speed change
D.All of the above are correct

單項選擇題

You will extinguish a fire when you remove（）.

A.nitrogen
B.oxygen
C.sodium
D.carbon dioxide

<b id="jfm7i"><small id="jfm7i"></small></b>