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【判断题】
比值控制系统的主要类型有单闭环比值控制系统、双闭环比值控制系统和变比值控制系统。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】判定一个循环队列QU(最多元素为m)为空的条件是()
A.
rear - front= =m
B.
rear-front-1= =m
C.
front= = rear
D.
front= = rear+1
【单选题】The principle of decreasing marginal benefit means that as the quantity of a good consumed
A.
decreases, its marginal benefit decreases.
B.
increases, its marginal benefit decreases.
C.
increases, its total benefit decreases.
D.
None of the above answers is correct.
【单选题】Marginal benefit _________.
A.
is the total benefit that a consumer receives from consuming an assortment of goods and services
B.
from a good is the additional cost to a consumer of another unit of the good
C.
from a good increases as more of the good is consumed
D.
from a good reflects the maximum willingness to pay for another unit of it
【单选题】All of the following statements about marginal benefit are correct EXCEPT the marginal benefit of a good
A.
is the benefit a person receives from consuming one more unit of the good or service.
B.
is measured as the maximum amount that a person is willing to pay for one more unit of the good.
C.
is equal to zero when resource use is efficient.
D.
decreases as the quantity consumed of the good increases.
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