non profit volunteering Pull messages are the ones which can be initiated with the customer, by using a mobile phone, for obtaining information or conducting a transaction staying with you account. Examples of pull messages for information have an account balance enquiry, or requests for current information like forex rates and deposit rates of interest, as published and updated with the bank. In his theory, money supply is controlled by the central bank and is an exogenous variable with no interest rate elasticity. At this point, monetary demand depends on people's psychological "liquidity preference". The same is true of unconventional interventions in corporate bonds and mortgage-backed securities. Not surprisingly, the concept of central bank independence obviously help to specific financial institutions - and this time, the whole society are under unprecedented economic pressures - soon become politically toxic. In the late 20th century, in the context of China's reform and opening up and modernization, and the influx of new concepts in the field of information technology, the meaning of "enterprise" changed. On the one hand, a large number of "enterprises" have emerged in the non-planned economy. On the other hand, in some new concepts, the meaning is not limited to commercial or for-profit organizations, which are currently mainly derived from the translation of the word "enterprise" in English. Therefore, the word "enterprise" appears in public media in two ways: Leakage may occur at the interface of the gasoline pipe, which leads to the use of the air conditioning system into the vehicle. If the owner found the car fumes, deal with gasoline pipeline - open interface to check engine hatch, it is easy to discern does the interface of gas leakage, for a period of time after the leakage surface will appear a layer of oil sludge. If the leakage of the gasoline pipe is found, the interface should be tightened or repaired.