运输工具进出境报关时，必须向海关申明的主要内容有( )。A．运输工具进出境的时间、

下列变化一定需要加入还原剂才能实现的（　　）

A．HCO₃^-→CO₂

B．HCl→Cl₂

C．FeCl₃→FeCl₂

D．Mn²⁺→MnO₄^-

菲德勒所确定的对领导的有效性起影响因素的三个准度是（）

A.下属素质、管理跨度、任务结构

B.职位权力、领导者性格、领导者素质

C.职位权力、下属素质、领导者素质

D.职位权力、任务结构、领导与下属的关系

以下哪种辅助配送模式不属于针对于偏远的农村以及山区的。（）

A.上门取货

B.委托送货

C.定点取货

D.固定送货点送货

Most disposable plastic containers are now labeled with a code number (from 1 to 9) indicating the type or quality of the plastic. Plastics with the lowest code numbers are the easiest for recycling plants to recycle and are thus the most likely to be recycled after use rather than dumped in landfills. Plastics labeled with the highest numbers are only rarely recycled. Consumers can make a significant long-term reduction in the amount of waste that goes unrecycled, therefore, by refusing to purchase those products packaged in plastic containers labeled with the highest code numbers.
Which one of the following, if true, most seriously undermines the conclusion above

A．The cost of collecting, sorting, and recycling discarded plastics is currently higher than the cost of manufacturing new plastics from virgin materials.

B．Many consumers are unaware of the codes that are stamped on the plastic containers.

C．A plastic container almost always has a higher code number after it is recycled than it had before recycling because the recycling process cause a degradation of the quality of the plastic.

D．Products packaged in plastics with the lowest code numbers are often more expensive than those packaged in the higher-numbered plastics.

E．(E) Communities that collect all discarded plastic containers for potential recycling later dump in landfills plastics with higher-numbered codes only when it is clear that no recycler will take them.

读下面一幅等高线地形图，回答有关问题。

写出图中字母所示部位的地形名称：A（），B（），C（），E（）。