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【单选题】
If Sam wants to increase her total revenue from her sales of flowers and she knows that the demand for flowers is price elastic, she shouldA.
lower her price to increase the demand and shift the demand curve rightward.
B.
raise her price because she knows that the quantity demanded will also increase.
C.
raise her price because she knows that the percentage decrease in the quantity demanded will be smaller than the percentage increase in price.
D.
lower her price because she knows that the percentage increase in the quantity demanded will be greater than the percentage decrease in price.
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【简答题】农夫山泉的广告中有一则“分别用矿物质水和纯净水饲养斑马鱼,矿物质水养的比纯净水养的好”,来诱导消费者认为矿物质水更有利于人体健康的观点。请从科学的角度进行分析评断。
【单选题】最稳定的碳正离子是
A.
＋ CH 2 CH ＝ CHCH 2 CH 3
B.
CH 3 CH ＝ CH ＋ CHCH 3
C.
CH 3 CH ＝ CHCH 2 ＋ CH 2
D.
CH 3 CH 2 ＋ CHCH 2 CH 3
【单选题】患者,女,70岁。因颌下急性蜂窝织炎入院,自诉颈部红肿、疼痛明显,自感心慌、气紧、胸闷,口舌发绀。既往有冠心病及慢性支气管炎历史。入院后予以补液、抗感染治疗。 1.考虑该患者最可能发生的并发症是:
A.
急性肺水肿
B.
急性心肌梗死
C.
急性呼吸衰竭
D.
窒息
E.
慢性支气管炎急性发作
【单选题】Which type of PL/SQL construct would you use to automatically correct the error resulting from a statement that was suspended due to a space/x7frelated problem？ （）
A.
function
B.
package
C.
procedure
D.
database trigger
E.
anonymous PL/SQL block
【单选题】(6~7题共用题干)患者,女,70岁。因颌下急性蜂窝织炎入院,自诉颈部红肿、疼痛明显,自感心慌、气紧、胸闷,口舌发绀。既往有冠心病及慢性支气管炎历史。入院后予以补液、抗感染治疗。 1.考虑该患者最可能发生的并发症是: ,
A.
急性肺水肿
B.
急性心肌梗死
C.
急性呼吸衰竭
D.
窒息
E.
慢性支气管炎急性发作
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