单选题Which of the following inventions, if it could be perfected and manufactured at a viable cost, would address the most challenges to human interstellar space travel, as presented in the passage?A A ram-scoop drive that can accelerate a spacecraft of any

题目
单选题
Which of the following inventions, if it could be perfected and manufactured at a viable cost, would address the most challenges to human interstellar space travel, as presented in the passage?
A

A ram-scoop drive that can accelerate a spacecraft of any size to four-fifths of the speed of light within 24 hours

B

A cold-sleep capsule that essentially halts the passage of time for human inhabitants while protecting them from all physical harm

C

A sustainable biosphere that reliably generates healthy food and automatically cleans air and water

D

A neutrino-based communications system that permits instantaneous communication across any distance without any relativistic time dilation

E

An impervious force field that protects the ship and its inhabitants from radiation, meteor strikes, or hostile alien attacks

参考答案和解析
正确答案: B
解析:
B项的概括要比C、E项全面;根据文章第三段内容可知A项是错误的;D项与文章内容无关,故本题应选B项。
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Which of the following bottlenecks would MOST likely cause excessive hard drive activity?()

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正确答案:A

第2题:

A user is unable to view any DVDs on their laptop which has a DVD-ROM drive installed. After further investigation, the technician realizes that there is not any DVD-ROM or CD-ROM available under the My Computer utility. Which of the following system utilities would MOST likely be used to identify and resolve this issue?()

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正确答案:B

第3题:

A user is unable to view any DVDs on their laptop which has a DVD-ROM drive installed. After further investigation, the technician realizes that there is not any DVD-ROM or CD-ROM available under the My Computer utility. Which of the following system utilities would MOST likely be used to identify and resolve this issue?()

A. Task Manager

B. Device Manager

C. DEFRAG

D. Event Viewer


参考答案:B

第4题:

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第5题:

A technician is working on a new computer running Windows XP and the hard drive is formatted at 20GB but is an 80GB hard drive. There is not another partition and no extra space can be foundunder Windows explorer.  Which of the following would be the BEST way to partition the remainder of the hard drive without data loss? ()

  • A、Add another hard drive and use that available space.
  • B、Run FDISK.
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正确答案:C

第6题:

An administrator has removed a SATA hard drive from a failed server. Which of the following adapters would MOST likely be used by the administrator to transfer files from the drive to a laptop?()

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正确答案:C

第7题:

A user requires more storage space on their computer. After a technician installs a second IDE drive in the computer, the system will not recognize that there are any hard drives installed. Which of the following is the MOST likely cause of the problem?()

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第8题:

For the IP address 192.168.2.1 which of the following subnet masks would be MOST likely used?()

  • A、255.255.0.0
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正确答案:C

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第10题:

单选题
Based on the information given in the passage, which of the following would be most effective in preventing a person infected with malaria from developing a hemorrhagic fever?
A

Surgical removal of the spleen

B

A medicine that prevents changes to the surface proteins of red blood cells

C

An effective vaccine against malaria

D

A potent pesticide that reliably kills the Anopheles mosquito without producing any negative consequences for the environment or for human health

E

A small infusion of a weaker variant of the Plasmodium protozoan that will then compete with the existing parasitic infection


正确答案: B
解析:
推断题。根据第四段最后一句“If the sticky surface proteins affect a particularly large number of cells, the malaria can transform into a hemorrhagic fever, the most deadly form of malaria.”可知,B项是正确的。

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