【多选题】The well-accepted 7 principles in environmental laws world-wide are:
A.
1. Sustainable development: development that meets the needs of the present without compromising the ability of future generations to meet their own needs. 2. Equity: considers the present generation under an obligation to account for long-term impacts of activities, and to act to sustain the global environment and resource base for future generations.
B.
3. Transboundary responsibility: an obligation to protect one's own environment, and to pr damage to neighboring environments. 4. Public participation and transparency: requiring publication and access to relevant environmental data, and administrative procedure.
C.
5. Precautionary principle: Where there are threats of serious or irreversible damage, lack of full scientific certainty shall not be used as a reason for postponing cost-effective measures to pr environmental degradation. 6. Prion: prior assessment of environmental harm, licensing or authorization that set out the conditions for operation and the consequences for violation of the conditions, as well as the adoption of strategies and policies.
D.
7. Polluter pays principle: the environmental costs of economic activities, including the cost of pring potential harm, should be internalized rather than imposed upon society at large.
【单选题】固定偏置放大电路中,晶体管的 β = 50 ,若将该管调换为 β =80 的另外一个晶体管,则该电路中晶体管集电极电流 I C 将( )。
【单选题】图像( )就是将二维空间上连续的图像用许多等距的水平线与竖直线分割成网状的过程。网状中的每个小方形区域称为像素点。这样一幅图像画面就被表示成M ́N个离散像素点构成的集合。
【单选题】2001 年颁布的《基础教育课程改革纲要 ( 试行 ) 》 , 在课程管理方面的改革目标是 () 。
【单选题】Which of the following would not result in an outward shift of a nation’s production possibilities frontier? ( )
A.
a reduction in the unemployment rate
B.
a rise in labor productivity
C.
advances in technology
D.
an expanding resource base
【简答题】(1)在图1中,根据平面镜成像特点,画出物体MN像M′N′; (2)如图2甲所示,枯井中的青蛙位于井底0点坐井观天,请在乙图中画出表示青蛙通过井口观察范围的两根光线,并用箭头标明光的传播方向.
【单选题】固定偏置放大电路中,晶体管的β=50,若将该管调换为β=80的另外一个晶体管,则该电路中晶体管集电极电流I C 将()。
【单选题】图像( )就是将二维空间上连续的图像用许多等距的水平线与竖直线分割成网状的过程。网状中的每个小方形区域称为像素点。这样一幅图像画面就被表示成M ́N个离散像素点构成的集合。
【判断题】双通道就是芯片组可以在多个不同的数据通道上分别寻址、读取数据。