What’s the difference of pronouncing between /3:/ and /ə/?/ə/ is made similarly to /3:/, but with less tension.

A . Asymmetric ciphers use pre-shared keys B . Symmetric ciphers are faster to compute C . Asymmetric ciphers are faster to compute D . Asymmetric ciphers use public and private

A .  FabricPath switch ID must be configured under the vPC domain. B .  Virtual switch ID of vPC+ must be configured under FabricPath domain. C .  On Cisco Nexus 7000 Series Switch， F1 interfaces must be used as the vPC+ peer links. D .  The vPC+ peer link must be configured as a Cisco FabricPath core port （switchport mode fabricpath）. E .  FabricPath subswitch ID must be configured under the vPC domain.

A .  OSNR B .  dispersion C .  light skew D .  attenuatio

A . OSNR B . dispersion C . light skew D . attenuatio

A . Distance vector protocols send the entire routing table to directly connected neighbors. B . Distance vector protocols are responsible for sending updates to all networks listed in the routing table. C . Link state protocols are responsible for sending the entire routing table to the whole network. D . Link state protocols send updates regarding their own links status to all other routers on the network. E . None of the above

A . OSNR B . dispersion C . attenuation D . power budget E . amplifier spacing F . four wave mixing

A、Past B、M-time C、P-time D、Present

A．The two kinds of vaccines were vaccinated together on volunteers in the first phase. B．The two kinds of vaccines will be vaccinated together on volunteers in the second phase. C．The combined safety of vaccines had been tested in the first phase. D．The safety of each vaccine will be tested in the second phase.

A．Gravitational attraction. B．Little differences in the density of matter. C．The big bang. D．Massive stars.

Some condo hotels can now be found in beach and mountain towns and a few small cities,However, none is more famous than the great 105-year-old Plaza Hotel in New York,on Fifth Avenue across from Central Park. The Plaza closed for repair in When it reopened two years later,more than half of it had been changed into one of these modern condo hotels. Here&39;s how it works: You buy what equals to an apartment(公寓). If it&39;s at&39;The Plaza,it will cost you between $ 1.5million and $9 mllion. So you own a part of the building. But there&39;s some inconvinience. You may stay there no more than 120 days a year. hereion. The rest of the time,the hotel&39;s workers can book guests into your place, just as they would in the regular hotel&39;s rooms. So if you&39;re lucky and rich,you can now live in really special quarters up to almost one thid of the year. While others pay off your mortgage(房贷)the rest of the year. So far,a great monry of the nation&39;s condo hotel units have been purchased not by rich people but richer companiesm, including foreign ones. They want a nice place for their bosses to stay when they are in town or working late at the office. 47.A condo is a place where people . A.live B.work C.eat D.study What do we know about a condo hotel？A.It is designed by rich companies. B.It is built for foreign travellers. C.It is usually sold at a low price. D.It is owned by different people. How long can you stay in your own condo hotel unit a most each year？A.120 days B.One month C.Half a year D.Three months. What does purchased in the last parngraph probably mean？A.Closed. B.Bought. C.Damaged. D.Repaired. 请帮忙给出每个问题的正确答案和分析，谢谢！

A.splash B.spread C.scope D.Spade

A．A.In combination, personal observation and written reports are considered superior to other methods B．B.Statistical reports are the single most effective method C．C.Managers should use as many as three different methods when possible D．D.Managers should use all four methods, if possible E．E.It is not advised to utilize oral reports and personal observation as dual methods

A．to persuade B．to entertain C．to explain

A.the structural view B.the communicative view C.interactional view D.functional view 此题为多项选择题。