Higher CPI is a way of improving performance of CPU.

The earned value technique is a commonly used method of performance measurement．It integrates project scope，schedule，and cost measures to help the project management team assess project performance．If a project’s Cost Performance Index(CPI＝EV/AC)value less than 1．0，it means that（ ）。 A．the cost savings for work completed B．the project is ahead of its planned schedule C．the cost overrun for work completed D．1ess work was completed than was planned

The earned value technique is a commonly used method of performance measurement．It integrates project scope，schedule，and cost measures to help the project management team assess project performance．If a project’s Cost Performance Index(CPI＝EV/AC)value less than 1．0，it means that（ ）。 A．the cost savings for work completed B．the project is ahead of its planned schedule C．the cost overrun for work completed D．1ess work was completed than was planned

The earned value technique is a commonly used method of performance measurement．It integrates project scope，schedule，and cost measures to help the project management team assess project performance．If a project’s Cost Performance Index(CPI＝EV/AC)value less than 1．0，it means that（ ）。 A．the cost savings for work completed B．the project is ahead of its planned schedule C．the cost overrun for work completed D．1ess work was completed than was planned

The nturl cpitl in Prgrph 5 refers to______.the defense built by humn being to pThe nturl cpitl in Prgrph 5 refers to______.the defense built by humn being to prevent nturl dissters B．the brrier formed by nturl fetures to nturl dissters C．the cpitl tht government pour into restoring nturl lndscpes D．the cpitl tht bnks reserves for relief workfter nturl disster

A．the defense built by human being to prevent natural disasters

B．the barrier formed by natural features to natural disasters

C．the capital that government pour into restoring natural landscapes

D．the capital that banks reserves for relief work after natural disaster

Owing to the insufficient gas supply in the United States, the gas price has dramatically risen. The new gas price reality and the policy decisions it may trigger will undoubtedly lead to critical financial implications for some individuals or companies, but the situation can hardly be termed a "national crisis" or even a "shortage". What is true is that buyers—particularly those in the chemical industry and in independent power generation will not be able to acquire the quantity of gas they wish at the prices they wish to pay, or even at prices that will allow them to remain competitive in their markets, particularly during peak demand seasons.

Over the next year or two, the result will be higher, and more volatile prices, to be sure, but there are market-driven adjustment mechanisms even in the short term, e.g., more electric power from coal and oil, reduced production of domestic chemicals, and a commensurate substitution of imports. Consumers and companies will feel the economic pinch of higher prices; particularly, if we experience an exceptionally hot summer and a winter, when average temperatures were 20% colder than the year before in the Northeast. Still, the United States faces neither the specter of economic recession—at least not solely due to gas prices—nor of freezing families unable to 'obtain gas to heat their homes.

Given this new price plateau, demand adjustments will also take place and vary across regions of the United States and across industries, with power generation and chemicals perhaps the most affected. Some in those industries may find that their facilities are no longer financially viable at the new price plateau, and there will likely be another round of industrial restructuring not unlike others that have resulted from international differences in resource and labor costs—lest we forget, natural gas is still abundant and very low cost in other countries such as Trinidad, Qatar, and Iran, just as labor is abundant and low cost in China, Indonesia, and parts of Latin America.

From a policy perspective, the United States needs to carefully evaluate a series of trade-offs between environmental concerns and economic growth. The gas price experiences of the last two years are the first real tastes of the economic costs of a gas-based environmental strategy. Evaluating these trade-offs needs to be done with a level head and a clear understanding of those trade-offs.

What is the main topic of the article?

A．American economy is strongly hit by the high prices of gas.

B．American economy is affected by the high price of gas, but it is not a crisis.

C．American economic policy is a failure.

D．The prices of gas will rise in the following years.

关于CPIJ主频、CPl、MIPS、MF[,OPS，说法正确的是（ ）。

A．CPU主频是指CPU系统执行指令的频率，CPI是执行一条指令平均使用的频率

B．CPI是执行一条指令平均使用CPU时钟的个数，MIPS描述一条CPU指令平均使用CPU时钟数

C．MIPS是描述CPU执行指令的频率，MFLOPS是计算机系统的浮点数指令

D．CPU主频指CPU使用的时钟脉冲频率，CPI是执行一条指令平均使用CPU时钟数

A．CPI记分为1

B．CPI记分为2

C．CPI记分为3

D．CPI记分为4

E．CPI记分为9

一个区段内牙结石量太多或有不良修复体无法检查的是

计算机的“大脑”指的是计算机的哪个部件?_____

A: CBD

B: CPA

C: CPU

D: CPI

CPU的CPI与下列哪个因素无关?（ ）

A．时钟频率

B．系统结构

C．指令集

D．计算机组织