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【简答题】
写出下列曲线绕指定轴旋转而成的旋转曲面的方程： (1)yOz面上的抛物线z 2 =2y绕y轴旋转； (2)zOy面上的双曲线2x 2 -3y 2 =6绕x轴旋转； (3)xOz面上的直线x-2z+1=0绕z轴旋转．
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参考答案：
举一反三
【判断题】所谓心理健康是指在身体、智能以及情感上与他人的心理健康不相矛盾的范围内将个人心境发展成最佳状态。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】智商IQ的结论高于平常，是指其分数为 ( )。
A.
70～79
B.
80～89
C.
90～109
D.
110～119
E.
120～129
查看完整题目与答案
【单选题】国际卫生大会曾为心理健康下过这样的定义: “ 所谓心理健康,是指在身体、智能以及情感上与他人的心理健康不相矛盾的范围内, 将( )发展成最佳的状态 ”
A.
个人心境
B.
自我情绪
C.
个人认知
D.
社会适应能力
查看完整题目与答案
【判断题】To validate the study, the supervisors call 30 to 40 percent of the respondents to inquire whether the field workers actually conducted the interviews.
A.
正确
B.
错误
查看完整题目与答案
【判断题】A Generation Y will work in the same company for 30 to 40 years in the hopes of risingthrough the ranks.
A.
正确
B.
错误
查看完整题目与答案
【单选题】Suppose that a price of $30 per month, there are 30,000 subscribers to cable television in Small Town. If Small Town Cablevision raises its price to $40 per month, the number of subscribers will fall ...
A.
either $30 or $40 per month because the price elasticity of demand is 1.0.
B.
$30 per month.
C.
$40 per month.
D.
$0 per month.
查看完整题目与答案
【简答题】如何理解设计的主题或风格?
查看完整题目与答案
【单选题】A client presents to the emergency room, reporting that he has been vomiting every 30 to 40 minutes for the past 8 hours. Frequent vomiting puts him at risk for which of the following?
A.
Metabolic acidosis with hyperkalemia
B.
Metabolic acidosis with hypokalemia
C.
Metabolic alkalosis with hyperkalemia
D.
Metabolic alkalosis with hypokalemia
查看完整题目与答案
【单选题】A car travels a distance of 100 km. For the first 30 minutes it is driven at a constant speed of 80 km/hr. The motor begins to vibrate and the driver reduces the speed to 40 km/hr for the rest of the ...
A.
60.0 km/hr
B.
53.3 km/hr
C.
50.0 km/hr
D.
47.5 km/hr
查看完整题目与答案
【单选题】30% to 40% of the total number of new words in English are produced through ______.
A.
compounding
B.
affectation
C.
conversion
D.
shortening
查看完整题目与答案
相关题目：
【判断题】所谓心理健康是指在身体、智能以及情感上与他人的心理健康不相矛盾的范围内将个人心境发展成最佳状态。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】智商IQ的结论高于平常，是指其分数为 ( )。
A.
70～79
B.
80～89
C.
90～109
D.
110～119
E.
120～129
查看完整题目与答案
【单选题】国际卫生大会曾为心理健康下过这样的定义: “ 所谓心理健康,是指在身体、智能以及情感上与他人的心理健康不相矛盾的范围内, 将( )发展成最佳的状态 ”
A.
个人心境
B.
自我情绪
C.
个人认知
D.
社会适应能力
查看完整题目与答案
【判断题】To validate the study, the supervisors call 30 to 40 percent of the respondents to inquire whether the field workers actually conducted the interviews.
A.
正确
B.
错误
查看完整题目与答案
【判断题】A Generation Y will work in the same company for 30 to 40 years in the hopes of risingthrough the ranks.
A.
正确
B.
错误
查看完整题目与答案
【单选题】Suppose that a price of $30 per month, there are 30,000 subscribers to cable television in Small Town. If Small Town Cablevision raises its price to $40 per month, the number of subscribers will fall ...
A.
either $30 or $40 per month because the price elasticity of demand is 1.0.
B.
$30 per month.
C.
$40 per month.
D.
$0 per month.
查看完整题目与答案
【简答题】如何理解设计的主题或风格?
查看完整题目与答案
【单选题】A client presents to the emergency room, reporting that he has been vomiting every 30 to 40 minutes for the past 8 hours. Frequent vomiting puts him at risk for which of the following?
A.
Metabolic acidosis with hyperkalemia
B.
Metabolic acidosis with hypokalemia
C.
Metabolic alkalosis with hyperkalemia
D.
Metabolic alkalosis with hypokalemia
查看完整题目与答案
【单选题】A car travels a distance of 100 km. For the first 30 minutes it is driven at a constant speed of 80 km/hr. The motor begins to vibrate and the driver reduces the speed to 40 km/hr for the rest of the ...
A.
60.0 km/hr
B.
53.3 km/hr
C.
50.0 km/hr
D.
47.5 km/hr
查看完整题目与答案
【单选题】30% to 40% of the total number of new words in English are produced through ______.
A.
compounding
B.
affectation
C.
conversion
D.
shortening
查看完整题目与答案
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