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单选题
A look-out should report objects sighted using().
A

true bearings

B

magnetic bearings

C

gyro bearings

D

relative bearings


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考题 单选题A vessel’s position should be plotted using bearings of().A buoys close at handB fixed known objects on shoreC buoys at a distanceD All of the above

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考题 单选题On chart,bearings to near objects should be used in preference to objects farther off,because().A a small error in bearing or in laying it down on the chart has a greater effect in misplacing the position the longer the line to be drawnB all scales are kept updated for vital information by Notices to MarinersC the larger the scale of the chart,the greater the detail that can be shown on itD the mariner using the medium scale charts for passage along a coast need not transfer on to a large scale for short distances

考题 多选题Which four types of objects can be thrown using the throw statement?()AErrorBEventCObjectDExceptionEThrowableFRuntimeException

考题 单选题When using the radar for navigating().A the best fix is obtained by using a tangent bearing and a rangeB and using two radar ranges for a fix,the objects of the ranges should be close to reciprocal bearingsC and using ranges,the most rapidly changing range should be measured lastD and crossing a radar range of one object with the visual bearing of a second object,the two objects should be 80°to 110°apart

考题 单选题When navigating in thick fog with the radar on,you should().A station the look-out in the wheelhouse to keep a continuous watch on the radarB secure the sounding of fog signals until a vessel closes within five milesC station a look-out as low down and far forward as possibleD keep the radar on the shortest available range for early detection of approaching vessels