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【单选题】
采用DDC实现对照明系统的监控,其方法(不考虑调光)是通过在DDC中编制( )实现。A.
时间
B.
逻辑控制程序
C.
PID算法程序
D.
图形属性程序
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反馈参考答案：
举一反三
【判断题】The controllable elements can be altered in the long run and, usually, in the short run to adjust to changing market conditions, consumer tastes, or corporate objectives.
A.
正确
B.
错误
【简答题】概算定额的编制依据有（ ）。
【单选题】The long run is distinguished from the short run because only in the long run
A.
output prices can vary.
B.
factor of production prices can vary.
C.
the quantities of all factors of production can be varied.
D.
the firm no longer maximizes its profit.
【单选题】In which case can we be sure real GDP rises in the short run?
A.
foreign economies expand and taxes rise
B.
foreign economies expand and taxes fall
C.
foreign economies contract and taxes fall
D.
None of the above are correct.
【判断题】The short-run industry supply curve can be found by horizontally summing the short-run supply curves of all the individual firms in the industry.
A.
正确
B.
错误
【简答题】下列不属于概算定额的编制依据的是（ ）。
【简答题】概算定额的编制依据有（ ）。
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