更多"How does a coast radio station comm"的相关试题:
[单项选择]Details of coast radio stations and radar stations can be found in（）.
A. Admiralty Chart
B. Admiralty Light list
C. Admiralty List of Radio Signals
D. Admiralty Notices to Mariners
[单项选择]The Coast Radio Stations are found in（）.
A. Admiralty List of Lights and Fog Signals
B. Admiralty Maritime Communications
C. Admiralty List of Radio Signals
D. Admiralty Digital List of Lights
[单项选择]All coast radio stations（）DSC installed for VHF and HF.
A. have
B. had
C. are having
D. have had
[单项选择]How can the Coast Guard determine that a crew member is “able to understand any order spoken by the officers”?（）
A. Require a demonstration by the officer and the crew member
B. Require a written test
C. Require that an interpreter be provided
D. All of the above
[单项选择]How does using the service password encryption command on a router provide additional security?（）
A. by encrypting all passwords passing through the router
B. by encrypting passwords in the plain text configuration file
C. by requiring entry of encrypted passwords for access to the device
D. by configuring an MD5 encrypted key to be used by routing protocols to validate routing exchanges
E. by automatically suggesting encrypted passwords for use in configuring the router
[单项选择]How does a DHCP server dynamically assign IP addresses to hosts?（）
A. Addresses are permanently assigned so that the host uses the same address at all times.
B. Addresses are assigned for a fixed period of time. At the end of the period, a new request for an address must be made, and another address is then assigned.
C. Addresses are leased to hosts. A host will usually keep the same address by periodically contacting the DHCP server to renew the lease.
D. Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement.
[单项选择]How does an icebreaker normally free a ship which has become beset while navigating independently?（）
A. By backing down the track and cutting out ice on either bow
B. By approaching from the stern and crossing ahead at an angle of 20°to 30°to the beset ship's course
C. By overtaking the beset ship，running ahead and then backing down the track to the beset vessel
D. By approaching the vessel from astern and towing the beset vessel stern first
[单项选择]How is “radio silence” imposed?（）
A. By the On Scene Coordinator (OSC)
B. By the Coast Earth Station (CES) controlling the distress communications on that frequency
C. It is imposed by the Public Correspondence Station (PCS) controlling the distress communications on that frequency or channel
D. It is imposed by the High Seas Service (HSS) controlling the distress communications on that frequency or channel
[单项选择]How long must GMDSS Radio Logs be retained by the licensee when they relate to a distress situation or disaster? （）
A. 6 months
B. 1 year
C. 2 years
D. 3 years
[单项选择]How many languages does Peter speak?（）
A. Many languages.
B. Pretty well.
C. Four languages.
D. With his roommates.
[单项选择]How does ERS use the VLAN tag?（）
A. to provide service internetworking
B. to support transparency for Layer 2 frames
C. as a connection identifier to indicate destination
D. as a mapping to the DLCI in service internetworking
E. to provide a trunk by which all VLANs can navigate from one site to one or multiple sites
[单项选择]How does foam extinguish an oil fire?（）
A. By cooling the oil below the ignition temperature
B. By removing the fuel source from the fire
C. By excluding the oxygen from the fire
D. By increasing the weight of the oil
[单项选择]How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）
A. De-energizes the "charged mist" effect
B. Maintains a positive pressure on the vent header to cool the flammable vapors
C. Inert gas filters out the flammable vapors from the cargo tank spaces
D. Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit
[单项选择]How does combustion air enter the cylinder of a two-cycle diesel engine?（）
A. Cylinder head valves
B. Ports
C. Turbo chargers
D. Bleeder valves
[单项选择]How long must the GMDSS radio log be retained on board（）.
A. At least two years after the last entry
B. At least one year after the last entry
C. At least 90 days after the last entry
D. At least 30 days after the last entry
