问题标题:
英语翻译Onlyinthemostexceptionalcircumstancesisthelifespanofapatentextendedtoalterthisnormalprocessofevents.ThelongestextensionevergrantedwastoGeorgesValensi;his1939patentforcolorTVreceivercircuitrywasextended
问题描述:
英语翻译
Onlyinthemostexceptionalcircumstancesisthelifespanofapatentextendedtoalterthisnormalprocessofevents.
ThelongestextensionevergrantedwastoGeorgesValensi;his1939patentforcolorTVreceivercircuitrywasextendeduntil1971becauseformostofthepatent’snormallifetherewasnocolourTVtoreceiveandthusnohopeofrewardfortheinvention.
43.GeorgeValensi’spatentlasteduntil1971because________.
[A]nobodywouldofferanyrewardforhispatentpriortothattime
[B]hispatentcouldnotbeputtouseforanunusuallylongtime
[C]therewerenotenoughTVstationstoprovidecolourprogrammes
[D]thecolourTVreceiverwasnotavailableuntilthattime
我选了D能不能帮我分析一下
孙弢回答:
不好意思,看错了!应该是B,他的专利好长一段时间都没被投入使用.其实这与D的意思有点接近,而B发生在前,先要使用专利,才能选出彩电,所以B是优先与D,
何坚强回答:
但是标准答案选B你再看看
孙弢回答:
前面回答里,是:先要使用专利,才能造出彩电.....
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