更多"Which statement about the gyrocompa"的相关试题:
[单项选择]Which statement is FALSE concerning precautions during fueling operations?（）
A. All engines，motors，fans，etc. should be shut down when fueling
B. All windows，doors，hatches，etc. should be closed
C. A fire extinguisher should be kept nearby
D. Fuel tanks should be topped off with no room for expansion
[单项选择]Which statement about radio navigational warnings is TRUE（）.
A. The topics for warnings included in HYDROLANTS，HYDROPACS，and NAVAREA warnings are the same
B. NAVAREA warnings concern only coastal navigation and inland navigation in large bays or sounds such as Puget Sound
C. The United States is responsible for NAVAREA warnings in the North Atlantic north of 7°N，and west of 15°W
D. Long range radio navigational warnings are usually broadcast by radiotelephone，radiotelegraph，and radio-teletypewriter
[单项选择]Which is false about engine trials?（）
A. engine trails should be done after finishing the operation of turning the engine with the turning gear and starting the engine on air briefly
B. in the operation of engine trails, the main engine should be running in low-speed
C. As to the ship equipment with twin main engine, engine trials should be done with one engine ahead and another engine astern at the same time
D. the order “engine trials” should be given by the bridge
[单项选择]Which statement about CiscoWorks 2000 Inventory Manager is true?（）
A. It uses SNMP v1.
B. It scans devices for hardware information.
C. It scans and records the operational status of devices.
D. When the configuration of a device changes, the inventory is automatically updated.
[单项选择]Which statement about diesel engine combustion is true?（）
A. Combustion does not begin until the piston starts down on the power stroke
B. Maximum combustion pressure is reached before TDC
C. Turbulence in the cylinder causes a delay in ignition
D. Maximum cylinder firing pressure is not developed until the piston passes TDC
[单项选择]Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane（）.
A. Taglines are wire rope purchases that raise and lower the jib
B. Taglines are wire ropes for horizontal positioning of the rider block
C. Taglines can be fastened to corners of vehicles or containers
D. The crane might not have taglines installed in its rigging system
[单项选择]Which statement about transmitting distress messages by radiotelephone is INCORRECT?（）
A. Distress messages should first be transmitted on 2182 kHz
B. It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration
C. If no answer is received on the designated distress frequencies，repeat the distress call on any frequency available
D. Channel 16 (156.8 MHz) may be used for distress messages
[单项选择]Which statement about vlan operation on cisco catalyst switches is true?（）
A. when a packet is received from an 802.1Q trunk,the vlan id can be determined from the source MAC address table.
B. unkown unicast frames are retransmitted only to the ports that belong to the same vlan
C. ports between switches should be configured in access mode so that vlans can span across the ports
D. broadcast and multicast frames are retransmitted to ports that are configured on different vlan.
[单项选择]Which statement about access lists that are applied to an interface is true?（）
A. you can apply multiple access lists with the same protocol or in different…
B. you can config one access list,per direction,per layer 3 protocol
C. you can placeasmanyaccess lists as you want on any interface
D. you can apply ony one access list on any interface
[单项选择]Which statement about an estimated position is TRUE?（）
A. It is more reliable than a fix based on radar bearings
B. It may be based on a single LOP or questionable data
C. When a 3-LOP fix plots in a triangle，the center of the triangle is the estimated position
D. It is usually based on soundings
[单项选择]Which general statement concerning radar is FALSE?（）.
A. Raising the antenna height increases the radar range
B. The ability of radar to detect objects is unaffected by weather conditions
C. Radar bearings are less accurate than radar ranges
D. Radar should be checked regularly during clear weather to ensure that it is operating properly
[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]Which statement about RIPng is true?（）
A. RIPng allows for routes with up to 30 hops.
B. RIPng is enabled on each interface separately.
C. RIPng uses broadcasts to exchange routes.
D. There can be only one RIPng process per router.
[单项选择]Which statement about the hospital space on a cargo ship is TRUE（）.
A. The hospital may be used for disciplinary confinement if it is not being used for treatment
B. The hospital space must have both a bathtub and shower
C. A hospital is required on all vessels with a crew of 12 or more if it makes overnight voyages
D. If a ship has a crew of forty-five who do not have their own room，the hospital must have four berths
[单项选择]Which statement about the Flinders bar of the magnetic compass is CORRECT（）.
A. It compensates for the error caused by the vertical component of the Earth's magnetic field
B. It compensates for error caused by the heeling of a vessel
C. It compensates for quadrantal deviation
D. It is only needed in equatorial waters
[单项选择]You are on a containership. Which statement about the stowage of hazardous materials in containers is TRUE?（）.
A. The containers provide automatic segregation of hazardous materials except for class A explosives
B. All packages within a container must be marked This End Up to indicate the correct stowage
C. A refrigerated container with a fuel tank containing a flammable liquid must be stowed on deck
D. Packages of liquids within a container should be stowed on top of packages of solids to prevent crushing
[单项选择]Which statement about IPv6 is true?（）
A. Addresses are not hierarchical and are assigned at random.
B. Only one IPv6 address can exist on a given interface.
C. There are 2.7 billion addresses available.
D. Broadcasts have been eliminated and replaced with multicasts.
