三、試以升力係數對攻角（Angle of Attack）圖說明當升力係數為最大時，飛機速度將達到失速速度（Vstall）。而失速速度愈小者，代表該飛機安全性能愈佳，試詳細闡述之。又在飛機起飛離開地面時，吾人希望達到的速度為 1.2 倍失速速度，其原因為何？（20 分）

三、Please use 40 to 80 words to summarize the following article in English, do not copy any sentence in the excerpt.（20 分） Last February during his Fireside Hangout, President Obama explained that patent trolls (known more formally as Patent Assertion Entities, or PAEs) “don’t actually produce anything themselves. They’re just trying to essentially leverage and hijack somebody else’s idea and see if they can extort some money out of them.” This type of abusive patent litigation is a major problem. It’s also important to know what we’re not talking about here. We aren’t trying to make it harder to pursue legitimate intellectual property rights, or vigorously defend valid patents. Indeed, the United States has the best intellectual property protections in the world, and our system rightly ensures that these innovators are compensated for their creativity. The problem is when rogue companies make a business model out of exploiting and abusing the system, using it not to protect invention but to bring frivolous lawsuits to extract settlements from companies trying to serve American consumers. Bad patents in the system (such as those issued with broad or vague language) only compound the problem, and the issue extends far beyond any one industry.

相關申論題

相關試卷