Lindsay Judge, a policy analyst at the foundation, said many employers were using loopholes in the law that allow agency workers to sign away their right to equal pay. 3. The role of securities investment 3. The cost of accounting earnings is listed in historical cost. Due to the current accounting practice in the enterprise asset is measured at the historical cost in, with the cost nature is the historical cost has been derived from the law of the transfer, so as to determine the income is an important factor in the cost and the historical cost. According to the latest standard GB/T 3730.1-2001, cars are mainly divided into passenger cars and commercial vehicles.