Which of the following particularly makes Antarctica a dangerous place？

A . The source device will only retransmit lost packets on the request of the destination device. B . The source device starts a timer when it sends a segment and retransmits if an acknowledgment is not received before the timer expires. C . The destination device acknowledges receipt of a segment by sending a packet with a new sequence number and the ACK bit sent. D . The destination device acknowledges receipt of a segment by sending a packet that indicates the next sequence number it expects. E . If the destination device does not receive a segment, all segments are retransmitted. F . The source device keeps a record of all segments sent and expects and acknowledgment of each.

A . Fourteen servers per rack likeBladeCenter B . Two servers per rack for optimal cooling cost C . One server per rack for optimal cooling and energy efficiency D . Four servers per rack （twoexach half high） for optimal cooling

A . User initiated edit document command B . Silent navigation from an edited page C . User initiated save command D . Removal of a locked for editing statu

A．Right of access at all times to the company’s books, accounts and vouchers. B．Right to require from an officer of the company such information or explanations as they think necessary for the performance of their duties as auditors. C．Right to receive all communications relating to written resolutions. D．Right to receive all notices of,and other communications relating to, any general meeting which a member of the company is entitled to receiv E．

A．Fingerprints and Their Use B．Policemen and Fingerprints C．Fingerprints Are Useful Evidence D．Fingerprints Identify Criminals without Mistake

A．It refers to the phenomenon that people usually undervalue their creations. B．It is put forward by the honorable and successful manufacturer IKEA. C．It explains why the participants think highly of their own origami. D．It accounts for the popularity of do-it-yourself among youngsters.

A．A.The type of BSC that the BTS is connected to B．B.Timing Advance C．C.Number of cells in a cluster

A．the slope of the demand curve B．the rate at which demand changes when price changes C．how responsive the quantity demanded is to changes in price D．the percentage-slope of the demand curv E．None of these correctly defines what price elasticity of demand measures．

A．Heart Disease B．Depression and Fatality Rate C．Depression D．Depression Hurts the Heart