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In the OSNR model for EDFA amplifiers, SNR OUT = 1/(1/SNR IN + FhvB/P IN ), what does SNR IN represent?()
A . the signal to noise of the current optical amplifier
B . the signal to noise of the previous amplifier or source
C . the signal to noise introduced by the optical multiplexer
D . the accumulated noise to signal ratio of the optical channel
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What does the SCN represent?()
A . The system change number, which is a point in time relative to transactions within a given database.
B . A number that represents time. Thus, at 1300 hours, the SCN is the same on all databases.
C . The security change number, which represents the security code that is needed to access any database structure.
D . A conversion factor that converts internal database time to external clock time.
E . UTC time in the database, providing a standardized way of tracking time in Oracle.&e
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When setting an access point to a non-root role,what two parameters,other than role in the radio network, must be configured on the ssid manager page?()
A . infrastructure devices to associate only to this ssid
B . enable ip redirection on this ssid
C . set data beacon rate
D . multiple basic service set identification (bssid)
E . set infrastructure ssid
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What is one of the primary roles of the SONAS device?()
A . provide storage to small enterprises
B . only handle network attached storage requirements
C . consolidate multiple filers into one
D . consolidate only Windows files into one device&e
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What role does the teacher play at the feedback stage?
A . A. Assessor.
B . B. Instructor.
C . C. Manager.
D . D. Researcher.
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Examine these statements: CREATE ROLE registrar GRANT UPDATE ON dtudent_grades TO registrar; GRANT registrar to user1, user2, user3; What does this set of SQL statements do? ()
A . The set of statements contains an error and does not work.
B . It creates a role called REGISTRAR, adds the MODIFY privilege on the STUDENT_GRADES object to the role, and gives the REGISTRAR role to three users.
C . It creates a role called REGISTRAR, adds the UPDATE privilege on the STUDENT_GRADES object to the role, and gives the REGISTRAR role to three users.
D . It creates a role called REGISTRAR, adds the UPDATE privilege on the STUDENT_GRADES object to the role, and creates three users with the role.
E . It creates a role called REGISTRAR, adds the UPDATE privilege on three users, and gives the REGISTRAR role to the STUDENT_GRADES object.
F . It creates a role called STUDENT_GRADES, adds the UPDATE privilege on three users, and gives the UPDATE role to the registrar.
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In the OSNR model for EDFA amplifiers, SNR OUT = 1/(1/SNR IN + FhvB/P IN ), what does SNR IN represent?()
A . the signal to noise of the current optical amplifier
B . the signal to noise of the previous amplifier or source
C . the signal to noise introduced by the optical multiplexer
D . the accumulated noise to signal ratio of the optical channel
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You are designing a Windows Azure application. The application contains one web role and three worker roles. You need to recommend an approach for updating only one role without interrupting the other roles. What should you recommend?()
A . Perform a VIP swap.
B . Perform an in-place upgrade.
C . Delete the current deployment and then redeploy the application.
D . Copy the cloud package to blob storage and then restart the service.
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Not everyone needs to be the group leader, but everyone does have an important role in discussion.
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What role does seawater play in global warming?
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What roles does the US President play?
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What role does exposition play in the plot?
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What is the primary role of the temporal lobe?
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What is the role of a Chinese business meal when doing business in China?
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What role does integrity play in personal and professional relationships?
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What does the man tell the woman?
A.He needs to see identification.
B.The documents will be sent to her room.
C.He forgot his notes for the morning.
D.She can pick up her package.
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What does the woman ask the man?
A.Where he lives
B.Where he is from
C.Who he spoke with
D.What he does for a living
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如果S<sub>1</sub>(p)=p-10,S<sub>2</sub>(p)=p-15,市场供给曲线出现折点时的价格为多少?If S<sub>1</sub>(p) =p-10 and S<sub>2</sub>(p) =p-15,then at what price does the industry supply curve have a kink in it?
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Which of the following does the author mention as a cause of changes in the role of the child in the United States?
A.An increase in technology.
B.The growing complexity of the child's psychological needs.
C.A decrease in the child's intellectual capacities.
D.The growing number of single parent families.
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What can we infer from the basic role of extinction?
A. Whales die more than they are born each year.
B. Whales' reproductive ability remains a very low rate.
C. The species of whales is doomed to extinction.
D. Whales' death rote keeps an increasing trend.
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What does the man offer the woman?
A.A promotion
B.Career advice
C.Freelance work
D.A job with Drake
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Questioning plays an important role for the classroom teaching. Which of the following questions does not belong to comprehension questions?
A、What is the main idea of this paragraph
B、Can you tell the difference between the two terms
C、Can you retell the text we have learned last week
D、Can you paraphrase the sentence in your own words
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What is the role of the underlined part As in that bridge in PARAGRAPH THREE()
A.Reflecting on topics that appeal to the author and readers
B.Introducing new evidence to what has been confirmed before
C.Identifying the kinds of questions supported by the experiments
D.Claiming that speakers of different languages differ dramatically
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What role does the teacher play in the deductive presentation of grammar?
A.Instructor
B.Prompter
C.Participant
D.Negotiator