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单选题
Recharging a previously used cartridge-operated dry-chemical extinguisher is accomplished by（）.
A
authorized fire equipment servicing personnel only
B
replacing the propellent cartridge and refilling with powder
C
puncturing the cartridge seal after installation
D
recharging the cartridge and refilling it with powder
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考题
Recharging a previously used cartridgeoperated drychemical extinguisher is accomplished by______．A.authorized fire equipment servicing personnel onlyB.replacing the propellent cartridge and refilling with powderC.puncturing the cartridge seal after installationD.recharging the cartridge and refilling it with powder
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考题
Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?A.Test the pressure gauge for correct readingB.Weigh the cartridgeC.Replace the dry chemicalD.Pressure test the discharge hose
考题
When relieving the helm，the new helmsman should know the ______．A.Course per magnetic steering compassB.Gyro errorC.VariationD.Maximum rudder angle previously used
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A large oil fire on the deck of a ship can be fought most effectively with ______.A.dry chemicalB.foamC.high-velocity fogD.water (cartridge-operated)、
考题
Some astronomers contend that the universe may be younger than previously believed.A:predict
B:argue
C:think
D:suggest
考题
Which two statements about the DiffServ model are true？（）A、a class can be identified as a single application， multiple applications with similar service needs，or be based on the source or destination IP addressB、a drawback of the DiffServ field in the MAC header to mark frames into behavior aggregates （BAs）C、DiffServ uses the DiffServ field in the MAC header to mark frames into behaviorD、the DiffServ field occupies the same eight bits of the MAC header that were previously used for the ToS fieldE、the first six high-order bits of the DiffServ field are used to identify the Resource Reservation Protocol （RSVP） valueF、the primary goal of DiffServ is scalability
考题
VTP is configured on switch R1. Which of the following features were added in VTP version 2 that were not previously supported in VTP version 1？（）A、Supports Token Ring VLANs.B、Allows VLAN consistency checks.C、Saves VLAN configuration memory.D、Reduces the amount of configuration necessary.E、Allows active redundant links when used with spanning tree.
考题
Which two statements about the DiffServ model are true？ （）A、 A class can be identified as a single application， multiple applications with similar service needs， or be based on the source or destination IP addresses.B、 A drawback of the DiffServ model is that it does not provide backward compatibility with devices that can only use the ToS field.C、 DiffServ uses the DiffServ field in the MAC header to mark frames into behavior aggregates （BAs）. D、 The DiffServ field occupies the same eight bits of the MAC header that were previously used for the ToS field.E、 The first six high-order bits of the DiffServ field are used to identify the Resource Reservation Protocol （RSVP） value.F、 The primary goal of DiffServ is scalability.
考题
Which of the following is the MOST important reason for referencing the HCL？（）A、 To ensure that all hardware being used has previously been testedB、 To ensure that all hardware being used has the latest firmwareC、 To ensure that all hardware being used is the most energy efficientD、 To ensure that all hardware being used can be upgraded in the future
考题
单选题Some paleontologists claim that the discovery of what appear to be feathers in the fossil of an Archosaur could force a revision of current theories on the phylogeny of Archosaurs, alter conceptions of dinosaur skin surfaces, and require scholars to credit birds with a far earlier orion than previously thought.A
require scholars to credit birds with a far earlier origin than previously thoughtB
scholars may be required to credit birds with a far earlier origin than previously thoughtC
require a crediting by scholars of birds with a far earlier origin than previously thoughtD
compared to what was previously thought, require scholars to credit birds with a far earlier originE
crediting birds with a far earlier origin than scholars had previously though
考题
单选题Following a system boot， the display indicates that previously detected hardware is missing. What command should be used to identify the missing hardware？（）A
diagB
lscfgC
cfgmgrD
lsattr
考题
多选题Which two statements about the DiffServ model are true？（）Aa class can be identified as a single application， multiple applications with similar service needs，or be based on the source or destination IP addressBa drawback of the DiffServ field in the MAC header to mark frames into behavior aggregates （BAs）CDiffServ uses the DiffServ field in the MAC header to mark frames into behaviorDthe DiffServ field occupies the same eight bits of the MAC header that were previously used for the ToS fieldEthe first six high-order bits of the DiffServ field are used to identify the Resource Reservation Protocol （RSVP） valueFthe primary goal of DiffServ is scalability
考题
单选题A large oil fire on the deck of a ship can be fought most effectively with（）.A
dry chemicalB
foamC
high-velocity fogD
Water (cartridge-operated)
考题
单选题You need to modify a client application that consumes a Windows Communication Foundation (WCF) service. The service metadata is no longer available. You need to modify the previously generated proxy to include asynchronous calls to the service. What should you do? （）A
Update the service reference with the Generate asynchronous operations option.B
Create a partial class for the previously generated proxy and include the new asynchronous methods.C
Create a class with the same name as the previously generated proxy and add the new asynchronous methods. Add the new class to a namespace that is different from the original proxy.D
Create a class with the same name as the previously generated proxy and add the new asynchronous methods as partial methods. Add the new class to a namespace that is different from the original proxy.
考题
单选题Your company decided to start using RMAN in its backup strategy. Previously your company used operating system file copies. Which command is used to make RMAN aware of existing backups made by copying files at the operating system？（）A
CHANGEB
RESYNCC
CATALOGD
CROSSCHECK
考题
单选题You are using VTP version 2 in your network to transport VLAN information between switches. When adding a switch to the network that has been used in the lab previously， you notice that a lot of the existingVLANs have been deleted or replaced with other names. What can you do to prevent this from happeningin the future， without losing all VTP features that you are using today？（）A
configure a hard-to-guess VTP domain nameB
use a hard-to-guess VTP passwordC
use VTP transparent modeD
implement VTP version 3
考题
单选题Which of the following is the MOST important reason for referencing the HCL？（）A
To ensure that all hardware being used has previously been testedB
To ensure that all hardware being used has the latest firmwareC
To ensure that all hardware being used is the most energy efficientD
To ensure that all hardware being used can be upgraded in the future
考题
单选题Which of the fire extinguishers listed is to be weighed annually and sent ashore for recharging if the weight loss exceeds 10% of the weight of a full charge?（）A
FoamB
Soda acidC
Dry chemicalD
Carbon dioxide
考题
单选题When choosing extinguishers to fight a Class “B” fire do NOT use（）.A
carbon dioxideB
dry chemicalC
foam (stored-pressure type)D
water (cartridge-operated)
考题
单选题Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?（）A
Insure the chemical is powderyB
Replace the cartridgeC
Pressure test the discharge hoseD
Test the pressure gauge for proper operation
考题
单选题Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?（）A
Check the tag to see when the extinguisher was last chargedB
Release a small amount of CO2; if the CO2 discharges，the extinguisher is acceptableC
Weigh the extinguisher and compare the weight against that stamped on the valveD
Recharge the extinguisher at least once each year
考题
单选题Which portable fire extinguisher is normally recharged in a shore facility?（）A
Dry chemical (cartridge-operated)B
Water (cartridge-operated)C
Water (pump tank)D
Carbon dioxide
考题
单选题When relieving the helm，the new helmsman should know the（）.A
Course per magnetic steering compassB
Gyro errorC
VariationD
Maximum rudder angle previously used
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