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单项选择题 You should plot your dead reckoning position（）.
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单项选择题 You determine your vessel’s position by taking a ra...
单项选择题 Which statement concerning current is TRUE（）.
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单项选择题 Which of the following are data layer categories to...
单项选择题 Which buoy will NOT display white retro reflective m...
单项选择题 When using horizontal sextant angles of three objects...
单项选择题 When navigating a vessel，you（）.
单项选择题 When latitude and longitude are used，these shall be...
单项选择题 What is an ebb current（）.
单项选择题 What is a lighted safe water mark fitted with to a...
单项选择题 What describes a flood current（）.
单项选择题 What area of the earth cannot be shown on a standa...
单项选择题 Traffic separation schemes adopted by the IMO are li...
单项选择题 The time required for a lighted aid to complete a ...
单项选择题 The recording fathometer produces a graphic record of...
单项选择题 The points on the earth’s surface where the magneti...
单项选择题 The four standard light colors used for lighted aids...
单项选择题 The equator is（）.
单项选择题 Restricted areas at locks and dams are indicated by...
单项选择题 On a chart，the characteristic of the light on a li...
单项选择题 In very high latitudes，the most practical chart proj...
单项选择题 How would you pass a red buoy in the maritime buoy...
单项选择题 Depiction of TSS's on charts uses（）as the primary ...
单项选择题 A celestial body will cross the prime vertical circl...
单项选择题 （） is not likely to be a methods of Traffic Sepa...
单项选择题 （） is a circular traffic lane used at junctions o...
单项选择题 （） is a defined area within which ships must use...
单项选择题 When using a buoy as an aid to navigation which of...
单项选择题 When navigating a vessel，you（）.
单项选择题 When making landfall at night，you can determine if ...
单项选择题 When entering from seaward，a buoy displaying a singl...
单项选择题 When entering a channel from seaward，the numbers on...
单项选择题 When approaching a preferred-channel buoy，the best c...
单项选择题 When a buoy marks a channel bifurcation，the preferre...
单项选择题 What is the major advantage of high altitude observa...
单项选择题 What is the light characteristic of a lighted，prefer...
单项选择题 What indicates a dual purpose buoy? （）
单项选择题 What describes an accurate position that is NOT base...
单项选择题 Uncharted lights，fog signals and radar beacon transmi...
单项选择题 Two navigational hazards are located near to each ot...
单项选择题 This is（）where we shall anchor.
单项选择题 There is sufficient anchorage for（）at all time arou...
单项选择题 The shortest distance between any two points on eart...
单项选择题 The positions and characteristics of lights and buoys...
单项选择题 The period of a lighted aid to navigation refers to...
单项选择题 The nominal range of a light may be accurately defi...
单项选择题 The maximum distance at which a light may be seen ...
单项选择题 The luminous range of a light takes into account th...
单项选择题 Restricted areas at locks and dams are indicated by...
单项选择题 Preferred channel buoys indicate the preferred channel...
单项选择题 Lighted white and orange buoys must show which color...
单项选择题 In plotting a running fix，how many fixed objects ar...
单项选择题 At the magnetic equator there is no induced magnetis...
单项选择题 A vessel’s position should be plotted using bearings...
单项选择题 A single line of position combined with a dead-reck...
单项选择题 A relative bearing is always measured from（）.
单项选择题 A position that is obtained by using two or more i...
单项选择题 A position that is obtained by applying estimated cu...
单项选择题 A position obtained by crossing lines of position ta...
单项选择题 A position obtained by applying only your vessel’s ...
单项选择题 A line of position is（）.
单项选择题 A line connecting all possible positions of your ves...
单项选择题 A large navigational buoy (LNB) is painted（）.
单项选择题 A fairly accurate estimation of a ship’s position c...
单项选择题 A dead reckoning (DR) plot（）.
单项选择题 A dead reckoning (DR) plot（）.
单项选择题 A cardinal mark showing an uninterrupted quick-flashi...
单项选择题 A buoy，being a shape of cylinder and with red grou...
单项选择题 A buoy with a composite group-flashing light indicat...
单项选择题 A buoy marking a wreck will show a(n)（）.
单项选择题 A buoy having red and green horizontal bands would ...
单项选择题 A bold reef is a reef（）.
单项选择题 （）means the curve on the earth’s surface which cu...
单项选择题 （）is the process by which the position of the ves...
单项选择题 Leeway is the（）.