單項選擇題

What is the major advantage of high altitude observations?（）

A.Errors due to unusual parallax are eliminated
B.The same body can be used for a fix from observations separated by several minutes
C.The declination is the only information needed from the almanac
D.The semidiameter correction of the sextant altitude is eliminated

你可能感興趣的試題

單項選擇題

What is the light characteristic of a lighted，preferred-channel buoy? （）

A.Group flashing
B.Composite group flashing
C.Interrupted quick flashing
D.Fixed and flashing

單項選擇題

What indicates a dual purpose buoy? （）

A.Red buoy with a horizontal yellow band
B.Red and white vertically-striped buoy with a vertical yellow stripe
C.Red and white vertically-striped buoy with a red spherical topmark
D.Green buoy with a yellow square

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

What is the major advantage of high altitude observations?（）

你可能感興趣的試題

What is the light characteristic of a lighted，preferred-channel buoy? （）

What indicates a dual purpose buoy? （）

What is the light characteristic of a lighted，preferred-channel buoy? （）