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这个英语句子是什么意思?
Keep in mind that the web，transmitting by satellites，cellphone，cable，goes through no one central location that anyone controls
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When dreaming up ideas for your e－business, keep in mind that everything sells well over the web.()
此题为判断题(对，错)。
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I'll never know all that was in his mind,().A、nor will anyone else eitherB、nor won't anyone else tooC、nor anyone else willD、nor will anyone else
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You create a Web site. You add an EditorZone control to the home page on the Web site. You need to enable users to customize the size and location of the Web Parts on their home pages.Which two controls should you add to the EditorZone control?（）A. BehaviorEditorPartB. AppearanceEditorPartC. PropertyGridEditorPartD. LayoutEditorPart
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AJSPpagecontainsataglibdirectivewhoseuriattributehasthevaluedbtags.WhichXMLelementwithinthewebapplicationdeploymentdescriptordefinestheassociatedTLD?()
A.tlduridbtags/urilocation/WEB-INF/tlds/dbtags.tld/location/tldB.tagliburidbtags/urilocation/WEB-INF/tlds/dbtags.tld/location./taglibC.tld.tld-uridbtags/tld-uri.tld-location/WEB-INF/tlds/dbtags.tld/tld-location./tldD.taglibtaglib-uridbtags/taglib-uritaglib-location/WEB-INF/tlds/dbtags.tld./taglib-location./taglib
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One end of a CAT5 cable is punched down following the 568B standard. The other end should beterminated using which standard to make a straight－through cable?()
A.568BB.RJ-11C.RJ-45D.568A
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What is the international standard for transmitting data over a cable sys tem?()
A. PPPoEB. DOCSISC. CMTSD. AAL5
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How can rescue personnel detect that a SART is transmitting in the immediate vicinity ________．A.The SART's blips on the PPI will begin arcing and eventually become concentric circlesB.The DSC unit will react to the SART's signal and respond with the two-tone autoalarmC.The SART can provide an approximate location to within a two nautical mile radius per IMO standardsD.The SART signal appears as a target which comes and goes; the effect of heavy swells on a SART
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What is the international standard for transmitting data over a cable sys tem?（）A、PPPoEB、DOCSISC、CMTSD、AAL5
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One end of a CAT5 cable is punched down following the 568B standard. The other end should beterminated using which standard to make a straight-through cable?（）A、568BB、RJ-11C、RJ-45D、568A
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You create a Web Form. You need to add controls that use adaptive rendering to display content. The type of content rendered must depend on the device that is requesting the page. What are two possible ways to achieve this goal?（）A、Add custom controls that emit XHTML to the Web Form.B、Add custom controls that emit WML to the Web Form.C、Add mobile controls to the Web Form.D、Add Web server controls to the Web Form.
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You develop an ASP.NET Web page that includes multiple WebPartZone controls， an EditorZone. Users report that they cannot customize the layout of the page by moving WebParts from one.You need to ensure that users can successfully move Web Parts from one zone to another. What should you do？（）A、Configure the Web site to enable session state.B、Configure the Web site to require authentication and to use personalization.C、Add a ProxyWebPartManager control to the page.D、Add a AppearanceEditorPart control to the page.
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You create a Web site. You add an EditorZone control to the home page on the Web site. You need to enable users to customize the size and location of the Web Parts on their home pages. Which two controls should you add to the EditorZone control?（）A、BehaviorEditorPartB、AppearanceEditorPartC、PropertyGridEditorPartD、LayoutEditorPart
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You are creating an ASP.NET Web site. The site contains pages that are available to anonymous users. The site also contains a page named Premium.aspx that provides premium content to only members of a group named Subscribers. You need to modify the web.config file to ensure that Premium.aspx can be accessed by only members of the Subscribers group. Which configuration should you use？（）A、location path="Premium.aspx" system.web authorization allow users="Subscribers"/ deny users="*"/ /authorization /system.web /location B、location path="Premium.aspx" system.web authorization allow roles="Subscribers"/ deny users="*"/ /authorization /system.web /location C、location path="Premium.aspx" system.web authorization allow roles="Subscribers"/ deny users="?"/ /authorization /system.web /location D、location path="Premium.aspx" system.web authorization deny users="*"/ allow roles="Subscribers"/ /authorization /system.web /location
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单选题Geostationary satellites are the artificial satellites which（）.A
always move slowlyB
are in one place onlyC
sometime move sometime don‟t moveD
are synchronizing with the movement of the earth
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单选题If a tow sinks in shallow water，you should（）.A
release it immediatelyB
attempt to beach it before it goes underC
pay out cable until it's on the bottom and place a buoy on the upper endD
shorten cable to keep it off the bottom
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单选题One end of a CAT5 cable is punched down following the 568B standard. The other end should beterminated using which standard to make a straight-through cable?（）A
568BB
RJ-11C
RJ-45D
568A
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填空题When buying in bulk, you have to keep in mind that any product will get used before it goes bad.____
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单选题A radio link between a transmitting earth station and a receiving earth station through one satellite is named a（）.A
Radio linkB
Space segmentC
Satellite linkD
upper link
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问答题Practice 6 Fiber-optic lines will form most of the backbone of the information highway, just as they do for the phone system today. Fiber-optic cable is made of long, thin strands of glass rather than wire, and it transmits information in the form of digitized pulses of laser light rather than the radio waves used by coaxial cable. Because light pulses have shorter wavelengths than radio waves, engineers can cram much more data into fiber-optic lines than into other kinds of cables and wires. A single fiber, for example, can handle a mind-boggling 5,000 video signals or more than 500,000 voice conversations simultaneously. This huge capacity allows it to transmit all signals digitally. So noise or static easily can be filtered out. Finally, because glass is an inherently more efficient medium for transmitting information than other materials, a fiber-optic line can transmit a signal thousands of miles without much “signal loss”. Fiber-optic cable, simply put, is the method of choice for transmitting massive quantities of information over long distances. Another key is “digital compression”—a variety of methods for reducing the amount of digital code (streams of ones and zeros) needed to represent a piece of information—whether it is a document, a still picture, a movie or a sound. Digital compression is most critical for transmitting video, because digitized video consumes enormous amounts of space. Just four seconds of a digitized film, for example, would completely fill a 100-megabyte hard drive. A feature film of typical length, if uncompressed, would occupy more than 350 ordinary compact discs. Compression techniques achieve their gins by recording only the changes from one frame to the next, The background image in a movie scene, for example, typically does not change much from one flame to another. In a digital compression scheme, the background would be recorded only once; after that, only the actors’ movements would be captured. One result is more choices—hundreds of channels coming through your cable TV line instead of dozens. Digital compression also makes it easier to piggyback data onto media that were not designed with data in mind: in particular, phone lines.
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