what is deferred profit sharing plan The importance of gasoline was not recognized in the 19th century, when it was used in a great deal of kerosene. The oil refining then relied on simple distillation processes to separate the different components of the oil from the boiling point. The boiling point of the kerosene component is higher, and the use of safety when lighting lamps becomes the main product of crude oil refining, while gasoline and other components are often burned as fuel. By the mid - to late 19th century, the successful use of gasoline engines in 1886, in 1886, the gasoline engine was successfully used as a driving force, thus the importance of gasoline increased. But using distillation, only 20% of the gasoline can be extracted from crude oil. In 1911, the standard oil company have solved the problem of low gasoline yield, by William burton and Robert hamm forest thermal cracking process of the invention, the heavy quality heating gas oil cracking of light gasoline fractions, such as to overall improve the gasoline yield, thermal cracking process in 1913 won the patent license in the United States. The subsequent catalytic cracking process has further improved the gasoline yield and octane value. In general, us interest rates fall and the dollar weakens. Us interest rates rise and dollar trends favour. A change in the price of U.S. Treasury bills, especially long-term Treasury bills, can help to predict the direction of the U.S. dollar. If investors think the us inflation is under the control, then under the existing Treasury bonds interest rate to attract, especially short-term Treasury bills, will attract investors, bond prices to rise. The response to multilayered values is rational. Rational (including abstract thinking with image thinking) is higher animals, are now known to have intelligent human only) on the basis of intellectual responses, to the further development of it by means of language, text or image will intellectual formed by various basic concept and basic image fixed in the form of the second signal system in the brain, and within the brain to be more complex, the deeper, longer series "sex", "rigid instinct", "elastic instinct" and "intellectual" and other forms of reaction. Among them, the cognition of the relation between the basic concepts forms the abstract thinking, and the person's understanding of the relation between the basic images forms the image thinking. Rationality is human to the second signal system of "reflection" type of reaction activity, it can find out the basic concept and basic image, more general internal relation and essence difference between to discover things between the movement of more general and more abstract and change rule. For example, people form "water" and "to..." through the practice of production and life. To ", "low" and "flow", the concept of nouns, prepositions, adjectives, verbs, between these concepts through a certain form of conditioned reflex established a mutual connection, thus obtained the "water flows downwards" such a logic rules. The company's chief executive and chairman Venkat Meenavalli media interview said: "the ultra high current market valuation is not reasonable and not real, we put the ipo pricing valuation for $5 is a very good description." But he emphasised: "we are a profitable company that has nothing to do with the current digital currency frenzy. Longfin has grown at a rapid rate of 200 per cent over the past six months and earned a profit of $28m. The European central bank's interest rate and previous decision to taper its bond purchases have been stable: capfafenbach Last year, labour market economist John Philpott found that more than one in five workers, around 7.1 million people, were in precarious employment, up from 5.3 million in 2006.