【简答题】设内存中有三道程序 A 、 B 、 C ,它们按 A 、 B 、 C 的优先次序执行(可抢占)。它们的计算和 I/O 操作的时间如下表所示(单位: ms ): 程序 操作 A B C 计算 30 60 20 I/O 操作 40 30 40 计算 10 10 20 假设三道程序使用相同设备进行 I/O 操作,即程序以串行方式使用设备,试画出单道运行和多道运行的时间关系图(调度程序的执行时间忽略不计)...
【单选题】One measure of expected return from real estate is the capitalization rate, the rate used to convert the earnings on a property into its estimated value. Assuming that you were interested in investing...
A.
High capitalization rates, High PE ratios, High bond default spreads
B.
High capitalization rates, Low PE ratios, Low bond default spreads
C.
High capitalization rates, High PE ratios, Low bond default spreads
D.
High capitalization rates, Low PE ratios, High bond default spreads