皮皮学，免费搜题
登录
搜题
【单选题】
Suppose that the demand curve for desktop computers shifts rightward and at the same time the supply curve shifts leftward. Which of the following could have caused these shifts?A.
Desktop computers are a normal good and incomes increased, while more firms entered the market.
B.
The price of a laptop computer, a substitute for desktop computers, fell and the cost of producing desktop computers decreased.
C.
Consumers purchased more computers because of the Christmas season and the labor costs of producing desktop computers decreased.
D.
Desktop computers are a normal good and incomes increased, while the labor costs of producing personal computers increased.
E.
Desktop computers are a normal good and incomes decreased, while the labor costs of producing personal computers increased.
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】患者,男性,62岁,患肝硬化病史5年,此次因呕血2天入院。查体:面色苍白,精神萎靡,体温8°C,血压118次/分,脉搏22次/分,血压90/60mmHg。为进一步明确出血原因应首选哪项检查
A.
X线钡餐
B.
内镜
C.
选择性动脉造影
D.
放射性核素
E.
腹部超声
【单选题】患者,男性,62岁,患肝硬化病史5年,此次因呕血2天入院。查体:面色苍白,精神萎靡,体温37.8°C,血压118次/分,脉搏22次/分,血压90/60mmHg。为进一步明确出血原因应首选哪项检查
A.
X线钡餐
B.
内镜
C.
选择性动脉造影
D.
放射性核素
E.
腹部超声
【单选题】患者,男性,62岁,患肝硬化病史5年,此次因呕血2天入院。查体:面色苍白,精神萎靡,体温37.8°C,血压118次/分,脉搏22次/分,血压90/60mmHg。为进一步明确出血原因应首选哪项检查
A.
腹部超声
B.
内镜
C.
选择性动脉造影
D.
放射性核素
E.
腹部超声
【简答题】He won't be here ____ he is invited.
【简答题】试述柱塞式输油泵的工作过程？
相关题目：
参考解析：
知识点：
题目纠错 0
发布
