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

<dd id="4x3uo"></dd>

<abbr id="4x3uo"></abbr>

<ins id="4x3uo"></ins>

單項(xiàng)選擇題

AMVER is a system which provides（）.

A.satellite communications
B.navigational information
C.weather information
D.position reporting service

你可能感興趣的試題

單項(xiàng)選擇題

All towing vessels of 26 feet or longer while navigating are required to carry which item? （）

A.At least two lifeboats
B.A radiotelephone
C.A radio direction finder
D.None of the above

單項(xiàng)選擇題

All portable fire extinguishers must be capable of being（）.

A.carried by hand to a fire
B.carried or rolled to a fire
C.recharged in the field
D.used on class "B" fires