网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
The self-contained breathing device should not be used in which situation?（）
A
Oxygen deficient spaces
B
Compartments containing poisonous vapors
C
Fighting fires that produce heavy smoke
D
Underwater search
参考答案
参考解析
解析：
暂无解析
更多 “单选题The self-contained breathing device should not be used in which situation?（）A Oxygen deficient spacesB Compartments containing poisonous vaporsC Fighting fires that produce heavy smokeD Underwater search” 相关考题
考题
On a ship, the locker or space containing the self-contained breathing apparatus must _____.A.be located in close proximity to the main control stationB.be equipped with battery powered emergency lightingC.be marked SELF-CONTAINED BREATHING APPARATUSD.All of the above
考题
Self-contained breathing apparatus is used to ______.A.make underwater repairs to bargesB.determine if the air in a tank is safe for menC.enter areas that may contain dangerous fumes or lack oxygenD.resuscitate an unconscious person
考题
What is the minimum period of time that the air supply for a self-contained breathing apparatus is required to last?________.A.10 minutesB.20 minutesC.30 minutesD.90 minutes
考题
You are in a tank wearing the self-contained breathing apparatus and you desire to return topside．How many tugs of the lifeline mean to take up the slack ________．A.OneB.TwoC.ThreeD.Four
考题
The bypass valve on a self-contained breathing device should be opened if ______．A.You are entering a space containing poisonous vaporsB.You are entering a space containing explosive gasesC.The regulator of the breathing apparatus malfunctionsD.The face piece of the breathing device is too tight
考题
Gas masks ______.A.should be worn while fighting a fireB.can be used in atmospheres deficient in oxygenC.filter contaminants from air that is to be breathedD.may be substituted for a self-contained breathing apparatus
考题
If a technician suspects that the voltage being delivered to a desktop computer’s power supply is insufficient or incorrect, which device should be used to determine the correct voltage?（）A、A power supply testerB、A multimeterC、A loopback adapterD、A cable tester
考题
Which protocol should be used to establish a secure terminal connection to a remote network device？Select the best response.（）A、ARPB、SSHC、TelnetD、WEPE、SNMPv1F、SNMPv2
考题
The Company network needs to pass traffic between VLANs. Which device should be used to accomplish this？ （）A、 HubB、 SwitchC、 RouterD、 BridgeE、 None of the other alternatives apply
考题
单选题The bypass valve on a self-contained breathing device should be opened if（）.A
you are entering a space containing poisonous vaporsB
you are entering a space containing explosive gasesC
the regulator of the breathing apparatus malfunctionsD
the face piece of the breathing device is too tight
考题
单选题To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）A
Speed limiting governorB
Over-speed governorC
Over-speed tripD
Over-speed relay
考题
单选题If a technician suspects that the voltage being delivered to a desktop computer’s power supply is insufficient or incorrect, which device should be used to determine the correct voltage?（）A
A power supply testerB
A multimeterC
A loopback adapterD
A cable tester
考题
单选题Gas masks（）.A
should be worn while fighting a fireB
can be used in atmospheres deficient in oxygenC
filter contaminants from air that is to be breathedD
may be substituted for a self-contained breathing apparatus
考题
单选题A self-contained breathing apparatus is used to（）.A
make underwater repairs to bargesB
determine if the air in a tank is safe for menC
enter areas that may contain dangerous fumes or lack oxygenD
resuscitate an unconscious person
考题
单选题The rated operating time of a self-contained breathing device may be reduced in actual use because of（）.A
pressure differences in the atmosphereB
the length of the hose attached to the facepieceC
the physical exertion of the person wearing the deviceD
spaces containing poisonous vapors
考题
单选题（）is not an advice be observed when samples are taken in tanks containing volatile petroleum products.A
Filter masks with a combination filter should be brought and used whenever necessaryB
Only explosion-proof equipment（marked EEx）should be usedC
Avoid breathing petroleum gases，especially if they come from sour crude（smell of rotten eggs）D
so far as possible，take early and substantial action to keep well clear
考题
单选题Which of the following commands should be used to verify the integrity of a device driver fileset？（）A
lslppB
lsdevC
lscfgD
lppchk
考题
单选题The function of the bypass valve on the self-contained breathing apparatus is to（）.A
control the pressure of the oxygen as it enters the bodyB
allow the wearer to manually give himself oxygenC
release excess heat which would otherwise cause the bottle to explodeD
allow exhaled gases to pass outside the bottle
考题
单选题Which emergency equipment should you keep near the towing bitts（）.A
A self-contained breathing apparatusB
A boat hook and a spanner wrenchC
A fire ax and/or cutting torchD
A Stokes litter basket
考题
单选题Which protocol should be used to establish a secure terminal connection to a remote network device? Select the best response.（）A
ARPB
SSHC
TelnetD
WEPE
SNMPv1F
SNMPv2
考题
多选题You deploy mobile devices that run Microsoft Windows Mobile 5.0 Pocket PC Phone Edition. You need to prevent the device screen from turning dark when users view documents. Which two actions should you perform？（）AConfigure the backlight brightness setting to maximum.BDisplay the soft input panel （SIP） when users read documents.CIncrease the value of the Turn off device if not used for option.DIncrease the value of the Turn off backlight if device is not used for option.
考题
单选题The Company network needs to pass traffic between VLANs. Which device should be used to accomplish this？ （）A
HubB
SwitchC
RouterD
BridgeE
None of the other alternatives apply
考题
单选题Which emergency equipment should you keep near the towing bitts? （）A
A self-contained breathing apparatus (SCBA)B
A boat hook and a spanner wrenchC
A fire ax and/or cutting torchD
A Stokes litter basket
考题
单选题You are about to enter a compartment to investigate a suspected smoldering fireIf youre not wearing a self-contained breathing apparatus, you should test the compartments atmosphere to determine if there is/are （）.A
sufficient oxygen to sustain human lifeB
an explosive mixture in the compartmentC
a toxic atmosphere in the compartmentD
All of the above
考题
单选题The basic training in fire prevention and fire fighting should include the practical elements which should allow the trainees to acquire the ability to （）.A
use self-contained breathing apparatusB
use various types of portable fire extinguishersC
effect a rescue in a smoke-filled space wearing breathing apparatusD
All of the above
考题
单选题Why should you wear a self-contained breathing apparatus before entering the engine room after the fixed CO2 system has been discharged to combat a major fire?（）A
Because carbon dioxide dilutes the oxygen concentration in the atmosphere and may cause asphyxiationB
Because carbon dioxide breaks down in a fire into carbon monoxide which may cause blood poisoning in the person breathing this gasC
Because carbon dioxide is a colorless and odorless gas that becomes highly toxic in the presence of high temperatures and will quickly incapacitate a person exposed to this gasD
This action is unnecessary as carbon dioxide is not poisonous nor toxic but is a relatively harmless gas
考题
单选题A ship must have a self-contained breathing apparatus to be used as protection from gas leaking from a refrigeration unit. To meet this requirement，you may use（）.A
a gas mask certified by the Mine Safety and Health AdministrationB
the same self-contained breathing apparatus required with the fireman's outfitC
an oxygen breathing apparatus，provided that the device has been inspected within three yearsD
a portable ventilation system that will provide a complete change of air every three minutes
热门标签
最新试卷
