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However, premium grade gasoline may have yet higher levels of detergent additives. [11] Typically, Top Tier gasoline will contain two to three times the amount of detergent additives currently required by the EPA. [12] The extra additives are estimated to cost less than a cent per gallon. [13]
Gasoline can be released into the Earth's environment as an uncombusted liquid fuel, as a flammable liquid, or as a vapor by way of leakages occurring during its production, handling, transport and delivery. [90] Gasoline contains known carcinogens, [91] [92] [93] and gasoline exhaust is a health risk. [82]
Fuel additives in the United States are regulated under section 211 of the Clean Air Act (as amended in January 1995). The Environmental Protection Agency (EPA) requires the registration of all fuel additives which are commercially distributed for use in highway motor vehicles in the United States, [8] and may require testing and ban harmful additives.
EXTRA ("Extended Range Artillery") is an artillery rocket system developed and manufactured by Israel Military Industries (IMI) and used by the Israel Defense Forces, Azerbaijan, Vietnam and the Kazakh Army since 2013. [2] It has a maximum range of 150km with a 120kg unitary warhead and accuracy of 10m CEP. [6] [7] [8]
Solid rockets use propellant in the solid phase, liquid fuel rockets use propellant in the liquid phase, gas fuel rockets use propellant in the gas phase, and hybrid rockets use a combination of solid and liquid or gaseous propellants. In the case of solid rocket motors, the fuel and oxidizer are combined when the motor is cast.
The history of gasoline started around the invention of internal combustion engines suitable for use in transportation applications. The so-called Otto engines were developed in Germany during the last quarter of the 19th century. The fuel for these early engines was a relatively volatile hydrocarbon obtained from coal gas.