[单项选择]The Experimental Lighthouse-buoy has no navigational significance and may be removed at will.The above sentence means（）.
A. It's of no use for navigation and would be removed with notice
B. It's useful in navigation and may be removed without notice
C. It's helpless in navigation and may be removed without notice
D. It's helpful in navigation and may be removed without notice

[单项选择]The Captain of the Port has closed to navigation，and buoyed，a section of a harbor. These buoys would be painted（）.
A. red or green to conform with the other lateral aids
B. red and green horizontally-striped
C. solid yellow
D. white with orange marks

[名词解释]试验误差 experimental error

[单项选择]Which statement about satellite navigation is TRUE? （）
A. While a fix can be generated by signals received from two satellites，three satellites are necessary for reliable accuracy
B. The satellites are in equatorial orbits around the earth about 60°of longitude apart
C. The satellite navigation system determines a fix by measuring the doppler shift of the radio signals from the satellite
D. The ship's receiver cannot begin processing data until the antenna locks onto the satellite and starts continuous tracking

[单项选择]Aids to navigation marking the intracoastal waterway can be identified by（）.
A. the letters ICW after the aid's number or letter
B. yellow stripes，squares，or triangles marked on them
C. white retroreflective material
D. the light characteristic and color for lighted aids

[单项选择]Which statement concerning the navigation of a vessel in ice is FALSE?（）
A. Anchoring in the presence of ice is not recommended except in an emergency
B. Towing a vessel through an ice field is not recommended except in an emergency
C. The "Free and Proceed" system of escorting a beset vessel cuts down on the number of freeing operations
D. When anchoring in ice，it is advisable to increase the scope of the chain over what is normally used for non-icing conditions

[单项选择]The loran lines drawn on navigation charts represent（）.
A. Ground waves
B. Skywaves
C. Either ground waves or skywaves interchangeably
D. An average between ground wave and skywave positions

[单项选择]Navigation lights must be displayed in all weathers from sunset to sunrise. They also（）.
A. must be displayed when day signals are being used
B. must be displayed when moored to a pier
C. may be extinguished at night on open waters when no other vessels are in the area
D. may be displayed during daylight

[单项选择]Which statement about the Navigation Rules is TRUE?（）.
A. The rules require vessels to comply with Traffic Separation Scheme regulations
B. The rules use the term safe speed
C. The Rules permit a stand-on vessel to take action prior to being in extremis
D. All of the above are correct

[单项选择]When the vessels steering wheel on the navigation bridge is turned, the difference existing between the position of the wheel and that of the rudder is known as （）.
A. proportional band
B. the error signal
C. the reset signal
D. feedback

[单项选择]Preferred channel marks are aids to navigation which all following marks other than（）．
A. channel junctions
B. bifurcations
C. fishing traps
D. wrecks or obstructions

[单项选择]Your vessel has just finished bunkering and has a small list due to improper distribution of the fuel oil. This list will cause（）.
A. a decrease in reserve buoyancy
B. a decrease in the maximum draft
C. the vessel to flop to port or starboard
D. None of the above

[单项选择]Rotation of the steering wheel on the navigation bridge initiates oil pressure being applied to the steering gear rams by （）.
A. regulating the oil flow with the six-way valve
B. moving the automatic differential valve
C. moving the receiving tele-motor which regulates the two-way valve
D. varying the angle of a tilting box or eccentricity of a floating ring

[单项选择]The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within（）.
A. The distance of visibility
B. 1/2 the distance of visibility
C. A distance appropriate to the existing circumstances and conditions
D. The distance that it would require for the propeller to go from full ahead to full astern

[单项选择]To determine what navigation lights and day-shapes must be displayed on mobile offshore drilling units under tow，you should check the（）.
A. American Bureau of Shipping classification rules
B. International Regulations for Preventing Collisions at Sea
C. Safety of Life at Sea Convention
D. Minerals Management Service rules

[单项选择]Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?（）
A. Geographical positions outlining the area of the sector
B. True bearings as observed from the ship toward the light
C. An outline of the area of the sector
D. True bearings as observed from the light toward the ship

[多项选择]Your company has a network that has an Active Directory domain. The domain has two servers named DC1 and DC2.You plan to collect events from DC2 and transfer them to DC1. You configure the required subscriptions by selecting the Normal option for the Event delivery optimization setting and by using the HTTP protocol.You discover that none of the subscriptions work.You need to ensure that the servers support the event collectors.Which three actions should you perform？（）
A. Run the wecutil qc command on DC1.
B. Run the wecutil qc command on DC2.
C. Run the winrm quickconfig command on DC1.
D. Run the winrm quickconfig command on DC2.
E. Add the DC2 account to the Administrators group on DC1.
F. Add the DC1 account to the Administrators group on DC2.

[单项选择]Your ARPA has been tracking a target and has generated the targets course and speed.The radar did not receive a target echo on its last two scans due to the weather.What should you expect under these circumstances（）.
A. The ARPA will generate data as if the target was still being tracked by radar
B. The ARPA will give an audible and/or visual lost target alarm
C. The ARPA will generate data based on sea return echoes from the vicinity where the target was lost
D. The ARPA has lost all memory of the target and must recompute the target data

[单项选择]Your company has a network that has 100 servers. A server named Server1 is configured as a file server. Server1 is connected to a SAN and has 15 logical drives.You want to automatically run a data archiving script if the free space on any of the logical drives is below 30 percent.You need to automate the script execution.You create a new Data Collector Set. What should you do next？（）
A. Add the Event trace data collector.
B. Add the Performance counter alert.
C. Add the Performance counter data collector.
D. Add the System configuration information data collector.