fuels

From what source do all the fuels get their force or energy?

Of all the fuels, natural gas may be said to be the ideal one.

Where either of these fuels is commonly used, there should be two ranges.

All fuels must be put into a gaseous state before they will burn.

The fuels most widely used in this country are coal, gas, and kerosene.

The fuels may be coke, anthracite or bituminous coal, charcoal, oil or gas.

The mangroves of the islet provided the best of fuels for the preservative smoke.

By the control of coal and other fuels the Government was bent on obtaining a firm grasp on shipping.

Of these fuels, coal, gas, and kerosene are used to the greatest extent in the United States.

The chemical energy of coal and other fuels cannot be directly converted into electric energy.