更多"When using horizontal sextant angle"的相关试题:
[单项选择]The disadvantage of using three strand nylon line for towing is its（）.
A. inherent weakness
B. tendency to rot if left damp
C. danger to crew if it parts
D. strength and shock absorbing abilities
[单项选择]When a tug is pulling on a hawser at right angles to the ship，and the pilot wants to come ahead or astern on the ship’s engine，care must be taken that the pilot（）.
A. does not break the towline
B. does not get too much way on the vessel
C. keeps a steady course so the towline will remain tight
D. turns the ship toward the direction of pull
[单项选择]When communicating on the radiotelephone using plain English，what procedure word indicates the end of my transmission and that a response is necessary? （）
A. Out
B. Over
C. Roger
D. Wilco
[单项选择]When using the term limber system one is referring to a（）.
A. Cleaning system
B. Drainage system
C. Strengthening system
D. Weight reduction system
[单项选择]When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.
A. the meridian through the object of the bearing
B. the meridian through the ship's position
C. the meridian midway between the ship and the object
D. any meridian
[单项选择]When you hear three short blasts on the ships whistle and the same signal on the general alarm bells, you （）.
A. are required to go to your life-raft
B. are dismissed from drills
C. should point to the man overboard
D. should start the fire pump
[单项选择]When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.
A. a straight line drawn on the chart approximates a great circle
B. the chart should not be used outside of the standard parallels
C. the course angle is measured at the mid-longitude of the track line
D. distance cannot be measured directly from the chart
[单项选择]When using the lifeboat compass，you must be careful to（）.
A. set it on the centerline of the boat
B. apply the correction for compass error
C. keep metal objects away from it
D. All of the above
[单项选择]When using a fuel with a higher than normal sulfur content in an auxiliary diesel engine, you should（）
A. maintain higher than normal jacket water temperature
B. change the lube oil more frequently than normal
C. maintain a higher air-box temperature than normal
D. maintain a higher air-box pressure than normal
[单项选择]When using the anchor to steady the bow while approaching a dock you must be aware of the fact that（）.
A. the vessel will tend to take a large sheer towards the side where the anchor is down
B. steering control is ineffective in trying to turn to the side opposite to that of the anchor being used
C. the anchor cable must never lead under the hull
D. using an offshore anchor decreases the chances of the anchor holding
[单项选择]When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.
A. 10 meters
B. 20 meters
C. 50 meters
D. 100 meters
[单项选择]When configuring Frame Relay using point-to-point subinterfaces, which of the following must not be configured?（）
A. The local DLCI on each subinterface of the Frame Relay.
B. The Frame Relay encapsulation on the physical interface.
C. An IP address on the physical interface.
D. The subinterface type as point-to-point
[单项选择]When fighting a fire on a bulkhead using a portable carbon dioxide extinguisher，the stream should be directed at the（）.
A. base of the flames，moving the horn from side to side，following the flames upward as they diminish
B. top of the flaming area，moving the horn from side to side，following the flames downward as they diminish
C. center of the flaming area，moving the horn vertically from top to bottom
D. bottom of the flaming area，moving the horn vertically to the top following the flames upward as they diminish
[单项选择]When using a buoy as an aid to navigation which of the following should be considered?（）
A. The buoy should be considered to always be in the charted location
B. If the light is flashing，the buoy should be considered to be in the charted location
C. The buoy may not be in the charted position
D. The buoy should be considered to be in the charted position if it has been freshly painted
[单项选择]When using the ARPA in heavy rain，which action should you take? （）
A. Increase the radar gain to pick up weak echoes through the rain
B. Increase the STC setting to reduce close-in spurious signals
C. Navigate as though the effective range of the radar has been reduced
D. Increase the range of the inner and outer guard rings
[单项选择]When using an ARPA，what should you consider in order to evaluate the information displayed?（）
A. The target vessel's generated course and speed are based solely on radar inputs
B. Navigational constraints may require a target vessel to change course
C. The trial maneuver feature will automatically determine a course that will clear all targets
D. You cannot determine if a small target has been lost due to sea return
[单项选择]When using the radar for navigating（）.
A. the best fix is obtained by using a tangent bearing and a range
B. and using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearings
C. and using ranges，the most rapidly changing range should be measured last
D. 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
[单项选择]What’s the advantage when using the satellites?（）
A. The message can be directed to the desired location
B. The message can follow the earth‟s curvature
C. The quality of message can not be affected by climatic
D. the range of the message extend and the quality of reception is improved
[单项选择]When using slings，cargo handlers should take all the following precautions except（）.
A. Ensure that slings are securely fastened around the load
B. Avoid careless winch operations，especially when handling fragile cargo
C. Exercise care when using hooks，crowbars，and similar tools
D. Keep the loads as close to the rail or deck as possible
