航海学题库_航海学试题_航海学在线答题_航海学搜题在线使用拍照解题

【单项选择题】 （）is the distance east or west measured in degrees，mi...

【单项选择题】 （）refers to the angle between true North and the head...

【单项选择题】 A gnomonic projection is based on a(n)（）.

【单项选择题】 A great circle track provides the maximum saving in dis...

【单项选择题】 A lateral system buoy displaying a quick light（）.

【单项选择题】 A light characteristic of composite group flashing indica...

【单项选择题】 A light having characteristics which include color variat...

【单项选择题】 A light that has a light period shorter than its dark...

【单项选择题】 A lighted preferred-channel buoy may show a（）.

【单项选择题】 A lighthouse can be identified by its（）.

【单项选择题】 A line of position formed by sighting two charted objec...

【单项选择题】 A line on the Earth parallel to the equator is a（）.

【单项选择题】 A mid-channel buoy，if lighted，will show a（）.

【单项选择题】 A nun buoy will（）.

【单项选择题】 A parallel of latitude other than the equator is a（）...

【单项选择题】 A plane perpendicular to the polar axis will never form...

【单项选择题】 A plane that cuts the Earth’s surface and passes throu...

【单项选择题】 A plane that cuts the Earth’s surface at any angle an...

【单项选择题】 A preferred-channel buoy may be（）.

【单项选择题】 A preferred-channel buoy will show a（）.

【单项选择题】 A relative bearing is always measured from（）.

【单项选择题】 A rock and sand structure extending from the bank of t...

【单项选择题】 A SEAMARK，I.E. A BUOY，INDICATING THE NORTH，EAST，SOUTH...

【单项选择题】 A special mark (yellow buoy)，if lighted，may exhibit w...

【单项选择题】 A special purpose buoy shall be（）.

【单项选择题】 A spherical buoy may be（）.

【单项选择题】 A structure，usually made of stone，or cement pilings，whi...

【单项选择题】 A vessel is（）when she is not at anchor，made fast to...

【单项选择题】 A V-shaped ripple with the point of the V pointing up...

【单项选择题】 A white buoy with a blue band is（）.

【单项选择题】 A white buoy with an open-faced orange diamond on it ...

【单项选择题】 A white buoy with an orange rectangle on it displays（...

【单项选择题】 A yellow buoy may exhibit a(n)（）.

【单项选择题】 A yellow buoy may mark a(n)（）.

【单项选择题】 An orange and white buoy indicating a vessel-exclusion ...

【单项选择题】 An orange and white buoy marking a danger area will ha...

【单项选择题】 An orange and white buoy marking an area where operatin...

【单项选择题】 An orange and white buoy with a rectangle on it displa...

【单项选择题】 Branford reef is（）.

【单项选择题】 Buoys are marked with reflective material to assist in ...

【单项选择题】 Buoys which mark dredging areas are painted（）.

【单项选择题】 Buoys which mark isolated dangers are painted with alter...

【单项选择题】 Buoys which only mark the left or right side of the c...

【单项选择题】 Except for N-S courses，and E-W courses on the equator...

【单项选择题】 Fishing stake，the position of which frequently（），exist...

【单项选择题】 From your position you observe a rotating white and gre...

【单项选择题】 How is the intensity of a light expressed in the Light...

【单项选择题】 How would you pass a red buoy in the maritime buoyage...

【单项选择题】 Leeway is the（）.

【单项选择题】 （）is the process by which the position of the vessel...

【单项选择题】 （）means the curve on the earth’s surface which cuts ...

【单项选择题】 A bold reef is a reef（）.

【单项选择题】 A buoy having red and green horizontal bands would have...

【单项选择题】 A buoy marking a wreck will show a(n)（）.

【单项选择题】 A buoy with a composite group-flashing light indicates ...

【单项选择题】 A buoy，being a shape of cylinder and with red group f...

【单项选择题】 A cardinal mark showing an uninterrupted quick-flashing ...

【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 fairly accurate estimation of a ship’s position can ...

【单项选择题】 A large navigational buoy (LNB) is painted（）.

【单项选择题】 A line connecting all possible positions of your vessel...

【单项选择题】 A line of position is（）.

【单项选择题】 A position obtained by applying only your vessel’s cour...

【单项选择题】 A position obtained by crossing lines of position taken...

【单项选择题】 A position that is obtained by applying estimated curren...

【单项选择题】 A position that is obtained by using two or more inter...

【单项选择题】 A relative bearing is always measured from（）.

【单项选择题】 A single line of position combined with a dead-reckonin...

【单项选择题】 A vessel’s position should be plotted using bearings of...

【单项选择题】 At the magnetic equator there is no induced magnetism i...

【单项选择题】 In plotting a running fix，how many fixed objects are n...

【单项选择题】 Lighted white and orange buoys must show which color li...

【单项选择题】 Preferred channel buoys indicate the preferred channel to...

【单项选择题】 Restricted areas at locks and dams are indicated by（）...

【单项选择题】 The luminous range of a light takes into account the（...

【单项选择题】 The maximum distance at which a light may be seen unde...

【单项选择题】 The nominal range of a light may be accurately defined...

【单项选择题】 The period of a lighted aid to navigation refers to th...

【单项选择题】 The positions and characteristics of lights and buoys sh...

【单项选择题】 The shortest distance between any two points on earth d...

【单项选择题】 There is sufficient anchorage for（）at all time around ...

【单项选择题】 This is（）where we shall anchor.

【单项选择题】 Two navigational hazards are located near to each other...

【单项选择题】 Uncharted lights，fog signals and radar beacon transmissio...

【单项选择题】 What describes an accurate position that is NOT based o...

【单项选择题】 What indicates a dual purpose buoy? （）

【单项选择题】 What is the light characteristic of a lighted，preferred...

【单项选择题】 What is the major advantage of high altitude observation...

【单项选择题】 When a buoy marks a channel bifurcation，the preferred c...

【单项选择题】 When approaching a preferred-channel buoy，the best chann...

【单项选择题】 When entering a channel from seaward，the numbers on buo...

【单项选择题】 When entering from seaward，a buoy displaying a single-f...

【单项选择题】 When making landfall at night，you can determine if a l...

【单项选择题】 When navigating a vessel，you（）.

【单项选择题】 When using a buoy as an aid to navigation which of th...

【单项选择题】 A body can only be observed at lower transit when（）.

【单项选择题】 A correction for augmentation is included in the Nautica...

【单项选择题】 A double star is a star that（）.

【单项选择题】 A first magnitude star is（）.