你可能感兴趣的试题
bypass exhaust gas at high loads to prevent excessive back pressure bypass a portion of the exhaust gas at peak loads for better efficiency recycle exhaust gas to the turbocharger minimize moisture condensation in the boiler gas passages at low loads
proper adding supplementary sufficient
steam rather than gas is used to turn a shaft vapor rather than gas is used to turn a shaft the former uses gas to turn a shaft the latter uses gas to turn a shaft
the gas pipe of the gas pipe that of the gas pipe those of the gas pipe
The coal reserves are big enough. All the fuel will be burnt before there is enough carbon dioxide. Coal-burning could easily make up the shortfall of oil and gas reserves. Oil and gas will run out so fast that Earth’s doomsday will never materialize.
The coal reserves are big enough. All the fuel will be burnt before there is enough carbon dioxide. Coal-burning could easily make up the shortfall of oil and gas reserves. Oil and gas will run out so fast that Earth’s doomsday will never materialize.
An ordinary car can run a lot more than 10,000 millions with 650 gallons of gas. An ordinary car can run no more than 15 miles with one gallon of gas. An ordinary car with ten gallons of gas can run no more than 150 miles. An ordinary car can run 10,000 miles each year with 70 billion gallons of fuel.
changing the direction of exhaust gas flow increasing the exhaust gas velocity changing the exhaust gas weight increasing the exhaust gas static pressure
proper adding supplementary sufficient
increase spread collect grow
Coal-burning to replace the oil and gas. Fossil fuels to replace the oil and gas. Green fuels to replace the oil and gas. The oil and gas to replace the coal-burning.
it is too far away. there is too much dust and gas around it. the binoculars are not powerful enough. it does not send out infrared light.
Coal-burning to replace the oil and gas. Fossil fuels to replace the oil and gas. Green fuels to replace the oil and gas. The oil and gas to replace the, coal-burning.