题目内容
若P、V操作的信号量S初值为2，当前值为-1，则表示有 (51) 等待进程。如果有三个进程共享同一互斥段，而且每次最多允许两个进程进入该互斥段，则信号量的初值应设置为 (52) 。 （51）处填（）。
查看答案
搜索结果不匹配？点我反馈
更多问题
Over the past decade, thousands of patents have been granted for what are called business methods. Amazon. com received one for its" one-click" online payment system. Merrill Lynch got legal protection for an asset allocation strategy. One inventor patented a technique for lifting a box. Now the nation’s top patent court appears completely ready to scale back on business-method patents, which have been controversial ever since they were first authorized 10 years ago. In a move that has intellectual-property lawyers abuzz the U. S. court of Appeals for the federal circuit said it would use a particular case to conduct a broad review of business-method patents. In re Bilski, as the case is known ,is "a very big deal", says Dennis D. Crouch of the University of Missouri School of law. It" has the potential to eliminate an entire class of patents. " Curbs on business-method claims would be a dramatic about-face, because it was the federal circuit itself that introduced such patents with is 1998 decision in the so-called state Street Bank case, approving a patent on a way of pooling mutual-fund assets. That ruling produced an explosion in business-method patent filings, initially by emerging internet companies trying to stake out exclusive rights to specific types of online transactions. Later, move established companies raced to add such patents to their files, if only as a defensive move against rivals that might beat them to the punch. In 2005,IBM noted in a court filing that it had been issued more than 300 business-method patents despite the fact that it questioned the legal basis for granting them. Similarly, some Wall Street investment films armed themselves with patents for financial products, even as they took positions in court cases opposing the practice. The Bilski case involves a claimed patent on a method for hedging risk in the energy market. The Federal circuit issued an unusual order stating that the case would be heard by all 12 of the court’s judges, rather than a typical panel of three, and that one issue it wants to evaluate is whether it should "reconsider" its state street Bank ruling. The Federal Circuit’s action comes in the wake of a series of recent decisions by the supreme Court that has narrowed the scope of protections for patent holders. Last April, for example the justices signaled that too many patents were being upheld for" inventions" that are obvious. The judges on the Federal circuit are" reacting to the anti-patent trend at the Supreme Court", says Harold C. Wegner, a patent attorney and professor at George Washington University Law School. The word" about-face" (Para 3) most probably means______.
当代资本主义国家政府执行经济职能的目标有两个：一是直接扶持私人垄断资本；二是______。
国民生产总值平减指数等于以当年价格(现价)计算的本期国内生产总值和以基期不变价格(基期价)计算的本期国内生产总值的比率。 ( )
计算N!的递归算法如下，求解该算法的时间复杂度时，只考虑相乘操作，则算法的计算时间T(n)的递推关系式为 (55) ；对应时间复杂度为 (56) 。int Factorial (int n){//计算n!if(n＜=1)return 1;else return n * Factorial(n-1);} （55）处填（）。
微信支付 
支付宝支付