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 asphyxiation
B . Because carbon dioxide breaks down in a fire into carbon monoxide which may cause blood poisoning in the person breathing this gas
C . 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 gas
D . This action is unnecessary as carbon dioxide is not poisonous nor toxic but is a relatively harmless ga
相似题目
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Why should you back up a duplicated tablespace after a TSPITR is complete？（）
A . The tablespace cannot be duplicated or restored to any point in time after the duplication.
B . The tablespace cannot be duplicated or restored to the point in time before the duplication.
C . The entire database cannot be restored after a TSPITR， so a backup is required.
D . You cannot bring the tablespace online until its been backed up.
E . There is no requirement to do so， as RMAN will back up the tablespace after the TSPITR.
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You have an Exchange Server 2010 organization.You need to determine why a remote SMTP server rejects e-mail sent from your organization.What should you do？（）
A . Review the application event logs.
B . Review the message tracking logs.
C . Set the Protocol logging level to Verbose on the Receive connectors and then review the protocol log files.
D . Set the Protocol logging level to Verbose on the Send connectors and then review the protocol log files.
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When a line is subject to wear where it passes through a mooring chock，it should be（）.
A . wormed，parceled，and served
B . wrapped with heavy tape
C . wrapped with chafing gear
D . wrapped in leather
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The bypass valve on a self-contained breathing device should be opened if（）.
A . you are entering a space containing poisonous vapors
B . you are entering a space containing explosive gases
C . the regulator of the breathing apparatus malfunctions
D . the face piece of the breathing device is too tight
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On your vessel，a wire rope for the cargo gear shows signs of excessive wear and must be replaced. In ordering a new wire for this 10-ton boom，what safety factor should you use?（）
A . Three
B . Five
C . Six
D . Seve
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You are a network administrator of a large investor relations company that uses a switchednetwork to carry both data and IP telephony services. Why should you carry voice traffic on aseparate VLAN？（）
A . IP phones require inline power and must be in separate VLAN to receive inline power
B . IP telephony applications require prioritization over other traffic as they are more delaysensitive
C . IP phones can only receive IP addresses through DHCP if they are in separate VLAN
D . The CDP frames from the IP phone can only be recognized by the switch if the phone is in anauxiliary vla
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You have a self-hosted Windows Communication Foundation (WCF) service. You need to configure the service to provide an X509 certificate during authentication. What should you use to configure the service?（）
A . the Certificate property of the X509 Certificate lnitiator Service Credential class
B . the SetCertificate method of the X509 Certificate Initiator Service Credential class
C . the SetCertificate method of the X509 Certificate Recipient Service Credential class
D . the TrustedStoreLocation property of the X509 Certificate Recipient Service Credential cla
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You should always wear（）when working on deck.
A . helmet
B . slippers
C . goggles
D . immersion suit
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If you were operating a centrifugal water service pump with worn wearing rings, the （）.
A . pump would be very noisy
B . pump would vibrate excessively
C . pump would develop insufficient flow
D . stuffing box would leak excessively
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Why should you avoid doing the things mentioned in the text?
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There should be 5 W’s (who, what , when, why, where) when you are writing a message.
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Why should you want to develop a good Persona profile? 你为什么应该要开发一个人物画像？
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In the movie Lion King , Simba said, ‘Why should I believe you? Everything you ever told me was a lie.’ 这里表明Simba还信任叔叔Scar。（ ）
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When a line is subject to wear where it passes through a mooring chock, it should be ______.
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Why should we take notes during a business call?
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3.In the body part, you should explain why you make an excellent candidate for the position.
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Why should you try to be punctual?
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To operate a lathe, you should NOT wear ( ).
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Generally speaking, why should you avoid asking a Westerner about their marital status?
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听力原文：F: What I can't make out you is why you are so keen on the Layer-de-la-Haye house. Why on earth should we choose, actually choose, to live out in a village, even if it is a popular village. You know that I would love to live in town and...
M: ...and be boxed in by a thousand other houses I suppose~ Surrounded by a thousand faceless neighbors. No, let' s go for the village. After all I'm the one who has to do all the traveling. Back and forth to London every day. And I would rather add a 15 minutes bus ride to the train ride than be--How does it go？--cabin' d, cribb' d confi' d.
F: That' s all very well...all very well to take that romantic attitude. You know... you think you can get out of everything...wriggle out of any argument...by quoting Shakespeare. What about my preferences？ You are being selfish you know.
M: Selfish？ Me？
F: Yes. Think of the children. Its seems to me that you are so carried away with the idea that your personal likes and dislikes are making you anything but practical.
What's the relations between the speakers？
A．Friends.
B．Colleagues.
C．Husband and wife.
D．Landlord and tenant.
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–Why do you mke me do so –I’m sorry but you _____ do such thing.wouldB．cnC．shouldD．my.–Why do you mke me do so –I’m sorry but you _____ do such thing.would B．cn C．should D．my
A．would
B．can
C．shoul
D．may
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Everyone aboard the plane is ____the seat belt.A．should wear
B．supposed to wear
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When asked why he wasn’t wearing a face covering. In Arizona, where emergency orders were 11)______________,
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What points should be covered in a typical self- introduction？
A、personal information
B、your religion
C、work experience
D、expectation
