题目内容（请给出正确答案）

[主观题]

Files can be lost or destroyed accidentally. Keep（72)copies of all data on removable stora

Files can be lost or destroyed accidentally. Keep(72)copies of all data on removable storage media。

A．back

B．black

C．backdown

D．backup

提问人：网友strike03 发布时间：2022-01-06

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更多“Files can be lost or destroyed…”相关的问题

第1题

Files can be lost or destroyed accidentally. Keep（74)copies of all data on removablestorag

Files can be lost or destroyed accidentally. Keep(74)copies of all data on removable storage mediA.

A．backup

B．back

C．black

D．backdown

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第2题

Files can be lost or destroyed accidentally. Keep ______ copies of all data on removable storage med

ia.

A．backup B．back C．black D．backdown

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第3题

Files can be lost or destroyed accidentally. Keep（74) copies of all data on removable stor

Files can be lost or destroyed accidentally. Keep(74) copies of all data on removable storage media.

A．move

B．paste

C．backdown

D．backup

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第4题

听力原文： Have you ever encountered a system breakdown because of a computer crash？ It may

have started from a single Infectious file which runs through every computer in the world. And such a nasty computer virus is known to freeze the main operating system temporarily and hide within it to reproduce itself into a bigger infection, resulting in file deletion.

You should then subscribe to our anti-virus service, which provides 24-hour, worry-free protection through on and off line scanning. It has an automatic update function which can be done even during virus outbreaks. Our program will safely isolate and neutralize any infected files and restore lost files. Our online service also includes chat-based support from our certified technicians 24 hours a day. There are several system requirements on your computer however. Any interested customers must be using a computer with a 486 or higher processor and have at least 256 megabytes of RAM. Windows XP is preferred but not required. A one-year subscription costs only $49.99, so don’t delay! We urge you to protect your computer as new and more powerful virus threats appear constantly.

7 What is being advertised？

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B．A new chat site.

C．A computer store.

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第5题

根据下面材料，回答下列各题。 Uke a tired marriage．the relationship between libraries and pu

blishers has long been reassuringly dull．E—books，however，are causing heartache． Libraries know they need digital wares if they are to remain relevant，but many publishers are too careful about piracy and lost sales to c0．operate．Among the big six．only Random House and HarperCollins license e-books with most libraries．The others have either denied requests or are reluctantly experimenting． Publishers are wise to be nervous．Owners of e．readers are exactly the customers they need：book—lovers with money-neither the devices nor broadband connections come cheap．If these wonderful people switch to borrowing e-books instead of buying them，what then？ Electronic borrowing is awfully convenient．Unlike printed books．which must be checked out and returned to a physical library miles from where you live，book files can be downloaded at home．Digital library catalogues are often browsed at night．from a comfortable sofa．The files disappear from the device when they are due． Awkwardly for publishers，buying an e—book costs more than renting one but offers little extra value． You cannot resell it。lend it to a friend or burn it to stay warm．Owning a book is useful if you want to savour(品尝)it repeatedly，but who reads“Fifty Shades of Grey”twice？ E-1ending is not simple．however．There are lots of different and often incompatible e-book formats，devices and licences．Most libraries use a company called OverDrive，a global distributor that secures rights from publishers and provides e-books and audio files in every format．Yet publishers and libraries are worried by OverDrive’s market dominance，as the company can increasingly dictate fees and conditions． Library boosters argue that book borrowers are also book buyers，and that libraries are vital spaces for readers to discover new work．Many were．cheered by a recent Pew survey，which found that more than half of Americans with Hbrary cards say they prefer to buy their e-books．But the report also noted that few people know that e-books are available at most libraries，and that popular titles often involve long waiting lists，which may be what inspires people to buy． So publishers keep adjusting their lending arrangements in：search of the right balance．Random House raised its licensing prices earlier this year，and Harper Collins limits libraries to lending its titles 26 times． Hachita is engaged in some secret experiments，and the others are watching with held breath．In Britain the government will soon announce a review of the matter．The story of the library e-book is a nail-biter． What can be inferred from the fast paragraph？

A.Libraries are eager to keep relationship with publishers．

B.Several publishers have sold e-books to most libraries．

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D.Most publishers hesitate to cooperate with libraries．

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第6题

听力原文：Have you ever encountered a system breakdown because of a computer crash？ It may

听力原文： Have you ever encountered a system breakdown because of a computer crash？ It may have started from a single Infectious file which runs through every computer in the world. And such a nasty computer virus is known to freeze the main operating system temporarily and hide within it to reproduce itself into a bigger infection, resulting in file deletion.

You should then subscribe to our anti-virus service, which provides 24-hour, worry-free protection through on and off line scanning. It has an automatic update function which can be done even during virus outbreaks. Our program will safely isolate and neutralize any infected files and restore lost files. Our online service also includes chat-based support from our certified technicians 24 hours a day. There are several system requirements on your computer however. Any interested customers must be using a computer with a 486 or higher processor and have at least 256 megabytes of RAM. Windows XP is preferred but not required. A one-year subscription costs only $49.99, so don't delay! We urge you to protect your computer as new and more powerful virus threats appear constantly.

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A．A new computer.

B．A new chat site.

C．A computer store.

D．An anti-virus software program.

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第7题

You are using recovery Manager （RMAN) with a recovery catalog to backup up your production

You are using recovery Manager (RMAN) with a recovery catalog to backup up your production database. The backups and the archived redo log files are copied to a tape drive on a daily basis. The database was open and transactions were recorded in the redo logs. Because of fire in the building you lost your servers having the production database and the recovery catalog database.The archive log files generated after the last backup are intact on one of the remote locations.While performing a disaster recovery of the production database what is the next step that you must perform after restoring the data files and applying archived redo logs？（）

A. Open the database in NORMAL mode

B. Open the database in read-only mode

C. Open the database in RESTRICTED mode

D. Open the database with the RESETLOGS option

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第8题

数据文件可以被一个以上的程序使用。 Data files can be used by more than one program.

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第9题

I am sorry but the files will not be available until 25 January.The files can be delivered

______ .

A．immediately.