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单项选择题 The period at high or low tide during which there ...

单项选择题 The meaning of ebb tide is that （）.

单项选择题 The height of tide is the （）.

单项选择题 The height of eye correction is smaller than geometr...

单项选择题 The height of a light is measured from which refere...

单项选择题 The Earth’s irregular heating is caused by （）.

单项选择题 The Earth has the shape of a(n) （）.

单项选择题 The distance from the still water level (corrected ...

单项选择题 The distance between the surface of the water and t...

单项选择题 The distance between any two meridians measured along...

单项选择题 The distance between any two meridians measured along...

单项选择题 On a voyage from Halifax,N.S.,to Dakar,West Afric...

单项选择题 On a voyage from Capetown to London，the favorable o...

单项选择题 Lateral movement of the vessel to leeward of its co...

单项选择题 Information on the operating times and characteristics...

单项选择题 In Admiralty Sailing Directions，bands is the word us...

单项选择题 For full information regarding the current circulation...

单项选择题 During daylight savings time the meridian used for d...

单项选择题 During a period of whiteout，you should expect which...

单项选择题 Due to lapse of time the risk in these areas to s...

单项选择题 Conditions for crossing a rough bar are usually best...

单项选择题 Clearances of bridges and overhead cables below Bonne...

单项选择题 Clearance gauges at bridges indicate （）.

单项选择题 Attention is called to the fact that in many cases...

单项选择题 Attention is called to the fact that in many cases...

单项选择题 At last，the palm trees that fringe the natural harb...

单项选择题 As these features are not all charted，special cautio...

单项选择题 Areas enclosed by a long and short dashed magenta l...

单项选择题 An occulting light is one in which （）.

单项选择题 AFTER DROPPING THE PILOT means （）.

单项选择题 Above-normal tides near the center of a hurricane m...

单项选择题 A vessel not to impede the passage of another vesse...

单项选择题 A vessel is entering port A for the first time and...

单项选择题 A tug is to assist in docking an oceangoing vessel...

单项选择题 A pilot vessel on pilotage duty shall show identity...

单项选择题 A pilot vessel on pilotage duty at night will show...

单项选择题 A pilot vessel may continue to sound an identity si...

单项选择题 A navigator fixing a vessel’s position by radar （...

单项选择题 A line of position derived by radar range from an ...

单项选择题 A head on situation shall be deemed to exist at ni...

单项选择题 The Sailing Directions contain information on （）.

单项选择题 You will find information about the duration of slac...

单项选择题 （）amplify charted detail and contain information nee...

单项选择题 Admiralty Sailing Directions are Kept up to date by...

单项选择题 Every new supplement to the Sailing Directions （） ...

单项选择题 In Admiralty Sailing Directions，STRIPES is the word ...

单项选择题 Sailing directions are kept up to date by （）.

单项选择题 Place names used on board ships should be those （...

单项选择题 While steaming slowly in the harbor，no ship is （）...