皮皮学，免费搜题
登录
搜题
【单选题】
下列各曲线中,绕y轴旋转而成椭球面 的曲线是( ).
A.
2X 2 +3y 2 =1,y=0
B.
3y 2 +2z 2 =1,x=0
C.
3X 2 +2y 2 =1,z=0
D.
3X 2 +3z 2 =1,y=0
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】下列关于需求弹性与消费者支出(或销售者收入)之间的关系表述不正确的是( )。
A.
若某种商品的需求富有弹性，则价格与消费者支出呈反方向变动
B.
若某种商品的需求为单一弹性，即价格升(降)的百分率与需求减(增)的百分率相等
C.
若某种商品的需求缺乏弹性，则价格与消费者支出呈同方向变动
D.
若某种商品的需求富有弹性，当价格下降时，消费者支出减少
查看完整题目与答案
【单选题】Which of the following is TRUE regarding the labor market? I. The labor supply curve slopes upward because firms maximize profits as they hire more workers. II. If the real wage rate falls, the quan...
A.
I and II
B.
I and III
C.
II only
D.
I, II and III
查看完整题目与答案
【简答题】Directions: Choose from the following transitional expressions and put them in the blanks in the paragraph. in addition as finally for example even if also The erosion of the middle of the labor mark...
查看完整题目与答案
【判断题】大角度晶界是相邻晶粒的位向差小于 10° 的晶界。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】Assume that a country experiences a reduction in productivity that shifts the labor demand curve downward and to the left. If the labor market were always in equilibrium, this would lead to:
A.
a lower real wage and a rise in unemployment.
B.
a lower real wage and no change in unemployment.
C.
a lower real wage and less unemployment.
D.
no change in real wage or in unemployment.
查看完整题目与答案
【简答题】&8226;Read the aicle below about labor market in Spain． &8226;In mOst of the lines 41-52 there is one extra word。It is either grammatically incorrect or does not in with the sense of the text．Some lin...
查看完整题目与答案
【单选题】n Teenagers are often priced out of the labor market by the government-mandated minimum-wage level because employers cannot afford to pay that much for extra help. Therefore, if Congress institutes a ...
A.
(A) Since 1960 the teenage unemployment rate has risen when the minimum wage has risen.
B.
(B) Since 1960 the teenage unemployment rate has risen even when the minimum wage remained constant.
C.
(C) Employers often hire extra help during holiday and warm weather seasons.
D.
(D) The teenage unemployment rate rose more quickly in the 1970’s than it did in the 1960’s.
查看完整题目与答案
【判断题】If a monopolist faces a competitive labor market, it will hire labor up to the point where the price of output times the marginal product of labor equals the wage rate
A.
正确
B.
错误
查看完整题目与答案
【单选题】If the labor market is in equilibrium and then the labor supply curve shifts rightward,
A.
there will be a shortage of labor at the original equilibrium wage rate.
B.
there will be a surplus of labor at the original equilibrium wage rate.
C.
the equilibrium wage rate will rise.
D.
there will be a surplus of jobs at the new equilibrium.
查看完整题目与答案
【单选题】下列关于需求弹性与消费者支出（或销售者收入）之间的关系表述不正确的是( )。
A.
若某种商品的需求富有弹性，则价格与消费者支出呈反方向变动
B.
若某种商品的需求为单一弹性，即价格升（降）的百分率与需求减（增）的百分率相等 C.若某种商品的需求缺乏弹性，则价格与消费者支出呈同方向变动 D．若某种商品的需求富有弹性，当价格下降时，消费者支出减少
查看完整题目与答案
相关题目：
【单选题】下列关于需求弹性与消费者支出(或销售者收入)之间的关系表述不正确的是( )。
A.
若某种商品的需求富有弹性，则价格与消费者支出呈反方向变动
B.
若某种商品的需求为单一弹性，即价格升(降)的百分率与需求减(增)的百分率相等
C.
若某种商品的需求缺乏弹性，则价格与消费者支出呈同方向变动
D.
若某种商品的需求富有弹性，当价格下降时，消费者支出减少
查看完整题目与答案
【单选题】Which of the following is TRUE regarding the labor market? I. The labor supply curve slopes upward because firms maximize profits as they hire more workers. II. If the real wage rate falls, the quan...
A.
I and II
B.
I and III
C.
II only
D.
I, II and III
查看完整题目与答案
【简答题】Directions: Choose from the following transitional expressions and put them in the blanks in the paragraph. in addition as finally for example even if also The erosion of the middle of the labor mark...
查看完整题目与答案
【判断题】大角度晶界是相邻晶粒的位向差小于 10° 的晶界。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】Assume that a country experiences a reduction in productivity that shifts the labor demand curve downward and to the left. If the labor market were always in equilibrium, this would lead to:
A.
a lower real wage and a rise in unemployment.
B.
a lower real wage and no change in unemployment.
C.
a lower real wage and less unemployment.
D.
no change in real wage or in unemployment.
查看完整题目与答案
【简答题】&8226;Read the aicle below about labor market in Spain． &8226;In mOst of the lines 41-52 there is one extra word。It is either grammatically incorrect or does not in with the sense of the text．Some lin...
查看完整题目与答案
【单选题】n Teenagers are often priced out of the labor market by the government-mandated minimum-wage level because employers cannot afford to pay that much for extra help. Therefore, if Congress institutes a ...
A.
(A) Since 1960 the teenage unemployment rate has risen when the minimum wage has risen.
B.
(B) Since 1960 the teenage unemployment rate has risen even when the minimum wage remained constant.
C.
(C) Employers often hire extra help during holiday and warm weather seasons.
D.
(D) The teenage unemployment rate rose more quickly in the 1970’s than it did in the 1960’s.
查看完整题目与答案
【判断题】If a monopolist faces a competitive labor market, it will hire labor up to the point where the price of output times the marginal product of labor equals the wage rate
A.
正确
B.
错误
查看完整题目与答案
【单选题】If the labor market is in equilibrium and then the labor supply curve shifts rightward,
A.
there will be a shortage of labor at the original equilibrium wage rate.
B.
there will be a surplus of labor at the original equilibrium wage rate.
C.
the equilibrium wage rate will rise.
D.
there will be a surplus of jobs at the new equilibrium.
查看完整题目与答案
【单选题】下列关于需求弹性与消费者支出（或销售者收入）之间的关系表述不正确的是( )。
A.
若某种商品的需求富有弹性，则价格与消费者支出呈反方向变动
B.
若某种商品的需求为单一弹性，即价格升（降）的百分率与需求减（增）的百分率相等 C.若某种商品的需求缺乏弹性，则价格与消费者支出呈同方向变动 D．若某种商品的需求富有弹性，当价格下降时，消费者支出减少
查看完整题目与答案