题目内容

Efficiency is achieved using Centralised policies and Decentalised policies.

A. 对
B. 错

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A policy is efficient if it produces for society a maximum of net benefits and it occurs when _______ ______ ____ equal marginal damages.

________ is achieved using Centralised policies and Decentalised policies.

锁存器是一种()电路

A. 单稳态电路
B. 双稳态电流源
C. 暂稳态电路
D. 三稳态电路

SR锁存器,当S=R=0时,Q端的状态为()

A. 置0
B. 非定义状态
C. 置1
D. 保持上一状态

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