皮皮学，免费搜题
登录
搜题
【简答题】
准直器原理:光纤传出的发散光通过前置的类似( )变成平行光。
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】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】关于左后分支传导阻滞的心电图,下列哪项是错误的
A.
电轴右偏≥120°
B.
呈QⅠ、SⅢ型
C.
QRS波群时限0.08～0.10s
D.
肢导联QRS波群低电压倾向
E.
室壁激动时间V6>aVL0.01s
【单选题】As a result of product differentiation, a firm in a monopolistically competitive market:
A.
always has some market power.
B.
is very similar to a firm in a perfectly competitive market.
C.
faces a perfectly elastic demand curve.
D.
is very similar to a monopolist.
【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】对尿路感染病人的健康教育中, 错误的是 A 鼓励病人多饮水, B 长期预防性服用抗生素, C 及时治疗尿路结石, D 及时治疗尿道损伤, E 保持会阴部清洁
A.
B.
C.
D.
E.
E
【简答题】“笃实”。道不可坐论,德不能空谈。于实处用力,从知行合一上下功夫,核心价值观才能内化为人们的( )追求,外化为人们的自觉( )。
【单选题】A monopolistically competitive firm chooses its
A.
price and quantity just as a monopoly does.
B.
quantity but faces a horizontal demand curve just as a competitive firm does.
C.
price but can sell any quantity at the market price just as an oligopoly does.
D.
price and quantity based on the decisions of the other firms in the industry just as an oligopoly does.
相关题目：
【单选题】对尿路感染病人的健康教育中, 错误的是 A 鼓励病人多饮水, B 长期预防性服用抗生素, C 及时治疗尿路结石, D 及时治疗尿道损伤, E 保持会阴部清洁
A.
B.
C.
D.
E.
E