RAID最常用的是（)级别。

A.数据在存储池中硬盘上的自动均匀分布，避免了硬盘的冷热不均，从而降低了存储系统整体的故障率

B.克服了传统RAID重构的目标盘(热备盘)性能瓶颈，使得重构数据流的写带宽不再成为重构速度的瓶颈，从而大大提升了重构速度，降低了双盘失效的概率，提升了存储系统的可靠性

C.RAID2.0+中不存在写惩罚，克服了传统RAID技术中RAID5和RAID6级别中的写惩罚对LUN写性能的影响，使得LUN性能大幅度提升

D.单个LUN上的数据分布到很多不同的硬盘上，避免了硬盘热点，使得单LUN性能和容量都得到了大幅度提升

A.品位

B.职位

C.身份

D.级别

A.debug

B.emerg

C.warning

D.default

A.APN FQDN

B.TAI FQDN

C.MME FQDN

D.RAI FQDN

According to this passage, fires in Indonesia ______.

A．will not end until it starts to rain

B．will be eventually put out by human efforts

C．will die out in a few days when the trade winds blow

D．can only stop when the peat is totally wet

They don't know if it ______tomorrow. If it______, they will not go to the park.

A．will rain; rains

B．will rain; will rain

C．rains; will rain

If it______tomorrow, the match would be put off.(2013)

A．were to rain

B．was to rain

C．was raining

D．had rained

The passage aims to______.

A．list the factors that retarded the development of American railroads

B．illustrate the history of the development of American railroads

C．analyze advantages and disadvantages of American railroads at an early stage

D．present the pros and cons of American people in the 19th century

A.RAID 采用交叉存取技术，提高了访问速度

B.RAID1 使用磁盘镜像技术，提高了可靠性

C.RAID 使用多块廉价磁盘阵列构成，提高了性能价格比

D.RAID3 利用海明码校验完成容错功能，减少了冗余磁盘数量