are essential for the protection of data.

A．Memory

B．Backups

C．Files

D．Blocks

[单选题] (73) are essential for the protection of data.（73）A． MemoryB． BackupsC． FilesD． Blocks

[名词解释] 防护（protection against）与保护（protection for）

[单选题]Itisessentialthattheseapplicationforms______backasearlyaspossible.A)mustbesentB)willbesentC)aresentD)besent

[单选题]Itisessentialthattheseapplicationforms_____________backasearlyaspossible.A)mustbesentB)willbesentC)aresentD)besent

[名词解释] 保护系统 protection system

[单选题]What step is essential to the traditional production of flu vaccine?[A] Manufacturers implant the vaccine into ordered chicken eggs.[B] Scientists identify the exact strain soon after a flu pandemic starts.[C] Public health measures are taken as an i

[试题]What are the essential deliverables of the data quality portion of ETL?E．TL项目中的数据质量部分核心的交付物有那些？

[单选题]The essential part of the diesel engine, whose function is to convert the heat energy into the mechanical power, is the （）.A . crankshaftB . pistonC . connecting rodD . bearing

[多选题]The essential tasks of the Customs include （ ）.A.customs controlB.revenue c

[多选题]The essential tasks of the Customs include （ ）.A.customs controlB.revenue c