更多"Technological invention has directl"的相关试题:
[填空题]Technological invention has directly or indirectly produced social change in every period of history. The invention of the horse collar in the Middle Ages was a{{U}} (36) {{/U}}technological advance for agriculture; the{{U}} (37) {{/U}}for use at sea so{{U}} (38) {{/U}}navigation in the fifteenth century that it led in the age of{{U}} (39) {{/U}}; and the steam engine was an{{U}} (40) {{/U}}factor in the industrialization of Europe in the nineteenth century.
A discovery is another kind of technological{{U}} (41) {{/U}}. While inventions add something new to a culture, discoveries{{U}} (42) {{/U}}our knowledge of something that already exists. Gravity had always been there, but Newton "discovered" it: he{{U}} (43) {{/U}}.how this natural from worked and how its laws applied to falling bodies. This knowledge made possible many new inventions.{{U}} (44) {{/U}}.
Since each invention makes more inventions possible, the speed of technological development tends t
[填空题]When an invention is made, the inventor has three possible courses of action open to him: he can give the invention to the world by publishing it, keep the idea secret, or (36) it.
A granted patent is the result of a (37) struck between an inventor and the state, by which the inventor gets a limited period of (38) and publishes full details of his invention to the public after that period (39) .
Only in the most (40) circumstances is the life span of a patent extended to alter this normal process of events.
A patent remains (41) public after it has terminated. Indeed, patent experts of- ten advise anyone wishing to avoid the high cost of (42) a search through live patents that the one sure way of avoiding violation of any other inventor’s right is to steal and use a dead patent. Likewise, because publication of an idea in any other form permanently (43) further patents on that idea, it is tradi
