皮皮学，免费搜题
登录
搜题
【单选题】
In the last sentence of the third passage, to which of the following does 'it' refer?A.
Yellow 'hump'.
B.
Day.
C.
Sun.
D.
Hydrogen fuel.
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】In the long run a perfectly competitive firm operates ____ and a monopolistically competitive firm operates ____.
A.
at the efficient scale; with excess capacity
B.
at the efficient scale; at the efficient scale
C.
with excess capacity; with excess capacity
D.
with excess capacity; at the efficient scale
【单选题】Which of the following is not a characteristic of a competitive firm?
A.
There are many buyers and sellers in the market.
B.
The goods offered for sale are largely the same.
C.
Firms can freely enter or exit the market.
D.
All of the above are characteristics of a competitive market.
【单选题】某大型机械一次性大修理费用为8600元,耐用总台班960台班,大修理间隔台班240台班,则大修理费为()元/台班
A.
26.88
B.
25.64
C.
27.32
D.
35.83
【单选题】Which of the following is true for a monopolist but not for a perfectly competitive firm?
A.
Marginal revenue is less than price.
B.
Economic profits could be earned in the long run.
C.
Profit maximization occurs at the output level where marginal revenue equals marginal cost.
D.
(a) and (b) are true for a monopolist but not for a perfectly competitive firm.
【单选题】指出下列酸度适于佛尔哈德法的是
A.
pH 为 6.5 ~ 10.5
B.
pH 为 6.5 ~ 7.2
C.
酸度为 0.1mol·L-1 ~ 1.0 mol·L-1HNO3
D.
pH 为 4.0 ~ 6.0
【单选题】指出下列酸度适于佛尔哈德法的是 ( )
A.
pH为6.5 ~ 10.5
B.
pH为6.5 ~ 7.2
C.
酸度为0.1 mol·L-1 ~ 1.0 mol·L-1
D.
pH为4 ~ 6
相关题目：