首页
登录
职称英语
When an invention is made, the inventor has three possible 【C1】______ of ac
When an invention is made, the inventor has three possible 【C1】______ of ac
游客
2025-04-26
26
管理
问题
When an invention is made, the inventor has three possible 【C1】______ of action open to him: he can give the invention to file world by publishing it, keep the idea 【C2】______ , or patent it.
A 【C3】______ patent is the result of a bargain 【C4】______ between an inventor and the state, but the inventor gets a limited period of monopoly and publishes full details of his invention to the public after that period 【C5】______ .
Only in the most exceptional circumstances 【C6】______ the lifespan of a patent 【C7】______ to alter this normal process of events
The longest extension ever 【C8】______ was to Georges Valensi; his 1939 patent for color TV receiver circuit was extended until 1971 because for most of the patent’s normal life there was no color TV to 【C9】______ and thus no hope for reward for the invention.
Because a patent remains permanently 【C10】______ after it has terminated, the shelves of the library attached to the 【C11】______ office contain details of literally millions of ideas that are free for anyone to use and, if 【C12】______ than half a century, sometimes even re-patent. Indeed, patent experts often advise anyone 【C13】______ to avoid the high cost of conducting a search through【C14】______ patents that the one sure way of violation of any other inventor’s right is to plagiarize a dead patent. Likewise, because publication of an idea in any other form【C15】______ invalidates further patents on that idea, it is traditionally 【C16】______ to take ideas from other areas of print. Much modem technological advance is【C17】______ on these presumptions of legal security.
Anyone closely 【C18】______ in patents and inventions soon learns that most "new" ideas are, in fact, as old as the hills. It is theft reduction to commercial practice, either through necessity or dedication, or through the availability of new technology,【C19】______ makes news and money. The basic patent for the theory for magnetic recording dates back to 1886. Many of the original ideas behind television originate 【C20】______ the late 19th and early 20th century. Even the Volkswagen rear engine car was anticipated by a 1904 patent for a cart with the horse at the rear. [br] 【C6】______
选项
A、are
B、to be
C、be.
D、is
答案
D
解析
这是一个only引导状语放在句首的倒装句,故此处应该填be的正确形式,主语是 the lifespan of a patent,故应该选单数的形式is。
转载请注明原文地址:https://tihaiku.com/zcyy/4054980.html
相关试题推荐
Futurescientificdiscoverieswillmakepossiblethefurtherprolongationofthe
Thereareseveralpossibleexplanationsforthegreaterjob______inJapanincon
Whenaninventionismade,theinventorhasthreepossible【C1】______ofactio
Whenaninventionismade,theinventorhasthreepossible【C1】______ofactio
Whenaninventionismade,theinventorhasthreepossible【C1】______ofactio
Whenaninventionismade,theinventorhasthreepossible【C1】______ofactio
Whenaninventionismade,theinventorhasthreepossible【C1】______ofactio
Whenaninventionismade,theinventorhasthreepossible【C1】______ofactio
Whenaninventionismade,theinventorhasthreepossible【C1】______ofactio
Whenaninventionismade,theinventorhasthreepossible【C1】______ofactio
随机试题
Lookatthestatementsbelowandthetextaboutsomestrategiescompaniesca
Thepassagegivesageneraldescriptionofthebenefitsandpotentialproblemso
Inthesamewaythatachildmustbeabletomovehisarmsandlegsbeforeh
中国某公司生产的轻工产品年销售额中约一半为应收账款。国内某银行对其应收账款进行了
能破血行气,消积止痛的药物组是A.桃仁、红花B.莪术、三棱C.乳香、没药D.牛膝
毛知母顶端有残留的毛状浅黄色叶痕及茎痕,称为A.金钱眼B.金钱环C.金井玉栏D.
从基础货币的运用来看,它包含()。A:纸币 B:商业银行的存款准备金 C:流
下列各项中,在对境外经营财务报表进行折算时选用的有关汇率,符合会计准则的有( )
下列防水卷材中更适于寒冷地区建筑工程防水的有()。A.SBS改性沥青防水卷
关于变形缝的构造,说法不正确的是( )。A.伸缩缝基础部分不必断开 B.沉降
最新回复
(
0
)