An advantage of a dry chemical over a carbon dioxide fire extinguish is its（）.

A .  lower cost B .  higher chirp C .  easier to manufacture D .  higher dispersion tolerance E .  higher optical signal-to-noise ratio

A . It is effective in controlling fire in flowing oil such as coming from a broken fuel line B . It absorbs heat from materials that could cause reignition C . Most foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishment D . Once the surface is blanketed with foam and the fire is extinguished，no further foam is required

A . greater range B . effectiveness on all types of fires C . cleanliness D . All of the above

A . The DS8800 has a higher disk RPM than the Symmetrix DMX-4 B . The DS8800 has higher capacity with more efficient footprint than the Symmetrix DMX-4 C . The DS8800 supports FlashCopy for internal array replication D . The DS8800 supports external virtualizatio

A . lack of toxicity B . the multipurpose extinguishing ability C . burn-back protection D . cooling ability

A . IBM provides optional Remote Technical Support for hardware， NOS， and VMWare. B . The IBM xSeries EXA chipset has extensions to provide better efficiency for the VMFS file system. C . IBM servers can address larger LUNs on SAN storage than Dell. D . IBM provided VMWare with the majority of their internal drivers for ESX.

A . Host port speed of 2Gb/s B . Three-year hardware warranty C . Heterogeneous Operating System support D . Storage Manager software comes standard with DS4000 controller

A . Fiber core rope offers greater strength B . Fiber core rope offers greater flexibility C . Fiber core rope can be used at higher operating temperatures D . Fiber core rope is the only type authorized for cargo runner

A . it is fitted with neoprene O-ring seals B . the honing process makes it easier to maintain the desired oil film C . there is likelihood of water leaking into the combustion space D . it fits more loosely due to a decrease in heat transfer through the composite wall

A . Electrically non-conductive B . Relatively inexpensive C . Effective against chemicals containing an oxidizer D . All of the above

A . p630. Maximum partitions， maximum storage， I/O bus speed B . p670. Maximum partitions， maximum memory， number of I/O slots C . p655. Maximum number of CPUs， processor speed， number of I/O slots D . p690. Maximum number of CPUs， peak system bandwidth， peak I/O bandwidth

A .  It supports admission control that allows a network to reject or downgrade new RSVP sessions if one of the interfaces in the path has reached the limit （that is， all reservable bandwidth is booked）. B .  RSVP signals QoS requests per individual flow. In the request the authorized user （authorization object） and needed traffic policy （policy object） are sent. The network can then provide best-effort delivery to these individual flows. C .  RSVP streamlines communication by making it unnecessary to inform network devices of flow parameters （IP addresses and port numbers）. D .  Because of the stateful RSVP architecture， continuous signaling does not have to occur. E .  The flow-based approach is scalable to large implementations， such as the public Internet， because RSVP tracks each individual flow.

A . Easily plotted on a Mercator chart B . Negligible increase in distance on east-west courses near the equator C . Does not require constant course changes D . Plots as a straight line on Lambert conformal chart

A . lower thermal expansion rates than wet liners B . greater heat transfer rate than wet liners C . greater wear resistance than wet liners D . procedure to replace dry liners is simpler than for wet liner

A . Reduced power and space requirements B . Saves money on software costs C . Maintenance is easier because there is only one server D . Fewer instances of the operating system to maintai

A . Large misalignments can be tolerated between the shaft and engine coupling B . Slip is held to a minimum when reversing shaft rotation C . Engine torsion vibrations to the driven shaft are eliminated D . It aids in maintaining power factor

A．Limited liability B．Avoiding double taxation C．Easier access to stock market D．Less-rigid profit allocation

A．New membership discounts. B．Free lectures. C．Free audio programs. D．A Free magazine.

A.lower thermal expansion rates than wet liners B.greater heat transfer rate than wet liners C.greater wear resistance than wet liners D.procedure to replace dry liners is simpler than for wet liners

A．limited liability （对公司承担有限责任） B．CEO liability （CEO责任制） C．no liability （对公司不承担责任） D．unlimited liability （对公司承担无限责任）