This paper introduces P3 software background and its application as managing project to "coal for oil" chemical fertilizer. Methods and their steps are interpreted.

介绍了P3软件的背景及该软件作为项目进度管理软件应用于化肥“油改煤”工程的思路、方法及具体实施步骤。

youdao

Coal and natural gas are mainly used for electricity generation, whereas oil is used mostly to power transportation, yet the prices of all these energy sources are linked.

煤炭和天然气主要用于发电，而石油主要用于给运输提供能量，但所有这些能源的价格是相互关联的。

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Renewables account for only a small share of global primary energy consumption, which is still dominated by fossil fuels—30% each for coal and oil, 25% for natural gas.

可再生能源只占全球主要能源消耗的一小部分，化石能源仍然占主导地位——煤炭和石油各占30%，天然气占25%。

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Greenhouse gas emissions, such as carbon dioxide, are created in part by burning oil and coal for transportation and electricity.

VOA: special.2009.12.26

Fenton says within three years the cost of large solar plants should be the same as for coal or oil power plants.

VOA: standard.2009.10.27

"If coal and gas and oil had to pay the price for the damage that they did,we would use a whole lot less of them.

VOA: standard.2010.04.21

For coal, oil or natural gas, about two to three months of annual deliveries are in storage at any given time.

FORBES: Big Data Unleashes the Electric Equivalent of a Free Keystone Pipeline

The burning of fossil fuels, such as coal for electricity and oil for gasoline, has caused the overwhelming bulk of the man-made increase in carbon in the air, scientists say.

NPR: Experts: CO2 Record Illustrates 'Scary' Trend

By 2008 the market share for coal, oil and natural gas, along with nuclear, had grown to 92.5% of total primary energy in the U.S. with the remainder coming from renewables.

FORBES: Magazine Article