[单选题]（ ）是指我行应客户的申请，在收到进口贸易项下单据后，客户以进口货物物权作担保，由我行为客户先行垫付款项并对外支付，由客户在约定期限内归还我行垫款及其利息、费用等的短期贸易融资方式。
A.减免保证金开证
B.进口押汇
C.出口押汇
D.打包放款

2015年是全面深化改革的关键之年，我们要推进各项事业改革，向改革要发展的新动力。向改革要发展的新动力的哲学依据是（）。
①人类社会是螺旋式上升的前进过程，是不断运动的
②事物内部会孕育更新的要素，对现存事物要暂时性的理解
③自我“抛弃”是推动我国社会发展必不可少的环节
④实事求是是解放思想的前提，是改革的前提

The questions in this group are based on the content of a passage. After reading the passage, choose the best answer to each question. Answer all questions following the passage on the basis of what is stated or implied in the passage.
Pretty much everybody agrees that clean air is a good thing, right Evidently not so. Since the 1960s, when people started talking about clean air in the first place, the American energy industry, which includes coal companies, oil companies, and utility companies, has dragged its heels on every initiative to improve the quality of the air we breathe. Even after the Clean Air Act of 1970 and its amendments in 1977 and 1990 made it clear that controlling air pollution is a national priority, these companies have found tricks and loopholes to avoid compliance.
Perhaps the most egregious loophole is the one that allows older power plants to disregard limits on sulfux dioxide emissions until they undergo a
A. To explain how a loophole in the Clean Air Act allows power plants to avoid compliance with emissions restrictions
B. To raise awareness of the problems caused by sulfur dioxide emissions from coal- burning power plants
C. To argue against a specific implementation of the Clean Air Act that relates to greenhouse gas emissions
D. To argue that companies should not exploit a loophole in the Clean Air Act concerning an atmospheric pollutant
E. To advocate the passage of a new Clean Air Act that places limits on sulfur dioxide emissions