On no account can they cut it _______ it be fouled．

试卷相关题目

• 1The Pilotage-quarantine anchorage， ______ between Damen Dao and Qingshan Dao，is defined by the lines ______ the given points．

  A.situated／connected

  B.situated／connecting

  C.situating／connected

  D.situating／connecting

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• 2______ chart 3994，positions read from this chart should be shifted 0．03 minutes Northward．

  A.To consider

  B.To check

  C.To examine

  D.To agree with

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• 3The issue of Notices to Mariners of charts and these aids(Radar beacons)may be delayed until such time as they are assessed to be ______．

  A.temporary

  B.permanent

  C.occasional

  D.steady

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• 4A weather forecast states that the wind will commence backing．In the Northern Hemisphere(北半球), this would indicate that it will ______．

  A.shift in a clockwise manner

  B.decrease in velocity

  C.continue blowing from the same direction

  D.shift in a counterclockwise manner

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• 5Chart legends which indicate a conspicuous landmark are printed in ______．

  A.capital letters

  B.italics

  C.boldface print

  D.underlined letters

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• 6A vessel's position should be plotted using bearings of ______．

  A.fixed objects on shore

  B.buoys at a distance

  C.buoys close by

  D.All of the above

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• 7In order to insure that the racon signal is visible on your 3 cm radar，the ______．

  A.10 cm radar should be placed on standby or turned off

  B.gain control should be turned to maximum

  C.radar should be stabilized，head up

  D.rain clutter control should be off but，if necessary，may be on low

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• 8You have another ship overtaking you close aboard to starboard．You have 3 radar targets bearing 090° relative at ranges of 0.5 mile，1 mile，and 1.5 miles．In this case，the unwanted echoes are called ______．

  A.multiple echoes

  B.spoking

  C.indirect echoes

  D.side-lobe echoes

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• 9______ 20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions(捕获) are possible．

  A.As many as

  B.So many as

  C.As much as

  D.As more as

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• 10The system will accept a harbor map which is incorrect，therefore the operator must exercise caution in harbor selection．

  A.be considered

  B.be prudent

  C.be bold enough

  D.be carelessness

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