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A unity feedback control system has a plant transf...
A unity feedback control system has a plant transfer function:
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更多“A unity feedback control syste…”相关的问题
第2题
听力原文：Some progress has been made so far, right?
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(A) I doubt it.
(B) No, he didn't try hard.
(C) Yes, I'm in charge of the project.
(15)
A．
B．
C．
第3题
● The usual way to ensure reliable delivery is to provide the （71） with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special （72） frame. bearing positive or negative （73） about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the frame. has arrived safely. On the other hand, a negative acknowledgement means that something has gone wrong, and the frame. must be transmitted again. An additional complication comes from the possibility that hardware troubles may cause a
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frame. to （74） completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame. and then waits for an acknowledgement, positive or negative, will hang forever if a frame. is ever lost due to, for example, （75） hardware.
（71）
A. receiver
B. controller
C. sender
D. customer
（72）
A. data
B. control
C. request
D. session
（73）
A. application
B. connection
C. stream
D. acknowledgement
（74）
A. vanish
B. vary
C. appear
D. incline
（75）
A. acting
B. working
C. malfunctioning
D. functioning
第4题
● The usual way to ensure reliable delivery is to provide the （71） with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special （72） frame. bearing positive or negative （73） about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the frame. has arrived safely. On the other hand, a negative acknowledgement means that something has gone wrong, and the frame. must be transmitted again. An additional complication comes from the possibility that hardware troubles may cause a
点击查看答案
frame. to （74） completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame. and then waits for an acknowledgement, positive or negative, will hang forever if a frame. is ever lost due to, for example, （75） hardware.
（71）
A. receiver
B. controller
C. sender
D. customer
（72）
A. data
B. control
C. request
D. session
（73）
A. application
B. connection
C. stream
D. acknowledgement
（74）
A. vanish
B. vary
C. appear
D. incline
（75）
A. acting
B. working
C. malfunctioning
D. functioning
第5题
A. It is bigger.
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B. It is a prettier color.
C. It has a larger garden.
D. It has a prettier garden.
第6题
Tony Huesman, a heart transplant recipient (接受者) who lived a record 31 years with a single donated organ has died at age 51 of leukemia (白血病), but his heart still going strong. "He had leukemia," his widow Carol Huesman said, "His heart—believe it or not—held out. His heart never gave up until the end, when it had to."
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Huesman got a heart transplant in 1978 at Stanford University. That was just 11 years after the world&39;s first heart transplant was performed in South Africa. At his death, Huesman was listed as the world&39;s longest survivor of a single transplanted heart both by Stanford and the Richmond, Virginia-based United Network for Organ Sharing.
"I&39;m a living proof of a person who can go through a life-threatening illness, have the operation and return to a productive life," Huesman told the Dayton Daily News in 2006.
Huesman worked as marketing director at a sporting-goods store. He was found to have serious heart disease while in high school. His heart, attacked by a pneumonia (肺炎) virus, was almost four times its normal size from trying to pump blood with weakened muscles.
Huesman&39;s sister, Linda Huesman Lamb, also was stricken with the same problem and received a heart transplant in 1983. The two were the nation&39;s first brother and sister heart transplant recipients. She died in 1991 at age 29.
Huesman founded the Huesman Heart Foundation in Dayton, which seeks to reduce heart disease by educating children and offers a nursing scholarship in honor of his sister.
Tony Huesman died from ____________.
A.heart failure
B.heart transplant
C.pneumonia
D.non-heart-related disease
第7题
A．It has a very long history.
B．It is a private institution.
C．It was founded by Thomas Jefferson.
D．It stresses the comprehensive study of nature.
第8题
Although______fellow in the public eye, Maxwell has a proclivity toward expressions of______inner nature that escaped the eyes of even his most critical biographers.
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A．a loutish … a reckless
B．a courtly … a churlish
C．an enchanting … a placid
D．an unremitting … a polemical
E．an honest … sentimental
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