单选题 14、 In determining that the ______ of the navigational watch is adequate to ensure that a proper look-out can continuously be maintained，the master shall take into account all relevant factors、 A、 disposition B、 composition C、 reposition D、 position

单选题 2、 Which of the following isused to monitor the bearing of a radar target in relation to your location? A、 the electronic bearing line B、 the variable range marker C、 the anti-rain clutter D、 the anti-sea clutter

单选题 8、Which one of the followings does not limit the effective range of radar? A、 Pulse width B、 Pulse repetition frequency C、 Peak power D、 Target brightness

单选题 4、 When will you have to adjust gain? A、 every time you change ranges B、 each watch C、 every day D、 every week

单选题 3、 A high level of the Gain, allows you to see greater detail around you, but will______ the screen、 A、 clean B、 clutter C、 sweep D、 click

单选题 6、Radar makes the most accurate determination of the ______、 A、 direction of a target B、 distance to a target C、 size of a target D、 shape of a target

单选题 1、 By knowing how long it takes for a signal to return, _______ to a target can be determined、 A、 the bearing B、 the brightness C、 the distance D、 the range

单选题 7、When your vessel is proceeding to the area of traffic density, ______ is used to determine the exact ranges of other ships or objects in the vicinity、 A、 Satellite Navigator B、 GPS C、 DF D、 Radar

单选题 5、 As the radar antenna scans through ______ a rotation, it can show where the target is relative to your position、 A、 60 degree B、 360 degree C、 180 degree D、 90 degree