[单项选择]It is danger for vessels without the use of（）to approach the estuary in such poor visibility.
A. Loran C
B. Direction Finder
C. Gyro- compass
D. Radar

[单项选择]It is dangerous for vessels without the use of radar（）the estuary.
A. to get
B. to approach
C. to proceed
D. to close

[单项选择]It is dangerous for vessels without the operational radar（）the estuary.
A. to get
B. to approach
C. to proceed
D. to close

[单项选择]When two vessels are in immediate danger of collision，the stand-on vessel must（）.
A. abandon ship
B. assist in taking whatever action is necessary to avoid collision
C. hold course and speed
D. sound a distress signal

[单项选择]Vessels in port may use（）for receiving typhoon warnings during the typhoon season.
A. their transmitters
B. their receivers
C. their radars
D. their lorans

[单项选择]The use of the danger signal（）.
A. replaces directional signals
B. makes the other vessel the stand-on vessel
C. indicates doubt as to another vessels actions
D. is the same as a MAYDAY signal

[单项选择]The use of this rule does not relieve vessels（）their obligations to comply with the local laws.
A. from
B. of
C. off
D. over

[单项选择] You use Microsoft .NET Framework 4 to create an application. The application contains a partially trusted client assembly and a server assembly. You create a custom sandboxed application domain. You need to ensure that the application can be executed in a partial-trust environment. What should you do?（）
A.  Apply the following attribute to the server assembly.   [assembly: AllowPartiallyTrustedCallers(PartialTrustVisibilityLevel=VisibleToAllHosts)]
B.  Apply the following attribute to the server assembly.   [assembly: AllowPartiallyTrustedCallers(PartialTrustVisibilityLevel=NotVisibleByDefault)]
C.  Apply the following attribute to the client assembly.   [assembly: AllowPartiallyTrustedCallers(PartialTrustVisibilityLevel=VisibleToAllHosts)] 
D.  Apply the following attribute to the client assembly.   [assembly: AllowPartiallyTrustedCallers(PartialTrustVisibilityLevel=NotVisibleByDefault)]

[单项选择]Vessels，（）support vessels，should not enter the safety zone of a deepwater port unless clearance has been obtained from the Vessel Traffic Supervisor.
A. besides
B. excepted
C. otherwise
D. other than

[判断题]AP——Access Point，无线接入点。分两种：FAT AP（胖AP）、FIT AP（瘦AP）。

[单项选择]Required lifesaving equipment on existing vessels may becontinued in use on the vessel if（）.
A. kept on board no more than 2 years
B. inspected and serviced every 6 months
C. destroyed if more than 5 years old
D. maintained in good and serviceable condition

[单项选择]Vessels transiting Suez Canal are charged according to their（）.
A. gross tonnage
B. Suez Canal tonnage's
C. net tonnage's
D. Panama Canal tonnage's

[单项选择]The regulations require that inspected vessels on an international voyage，other than small passenger vessels，must carry which of the following distress signals on or near the navigating bridge?（）
A. 12 hand red flares
B. 12 rocket parachute flares
C. 12 hand combination flares and orange smoke signals
D. 6 hand red flares，and 6 hand orange smoke signals

[单项选择]Fire protection regulations for towing vessels allow all of these types of fuel piping，EXCEPT（）.
A. steel
B. aluminum in an aluminum-hulled vessel
C. schedule 80 fire resistant plastic pipe
D. nickel-copper，copper-nickel or annealed copper

[单项选择]Fire protection regulations for towing vessels require training in all of the following，EXCEPT（）.
A. putting on a fireman's outfit，if the vessel is so equipped
B. donning a self-contained breathing apparatus，if the vessel is so equipped
C. activating the general alarm and reporting inoperative alarm systems and fire-detection systems
D. refilling and servicing all expended fire extinguishing equipment