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【多选题】
为了达到优生优育的目的,系统的孕前健康检查是是非必要的,除了系统检查外,孕前还需要积极治疗调理:A.
口腔疾病
B.
体重问题
C.
痔疮问题
D.
糖尿病
E.
高 血压
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举一反三
【判断题】If consumers were originally willing to buy 500 units of a good at a price of $20 are now willing to buy 500 units of the same good at a price of $10, that change would be described as a decrease in d...
A.
正确
B.
错误
【单选题】If at a price of $10, quantity bought will be 5400 per day, and at $15, quantity bought will be 4600 per day, then the price elasticity of demand is approximately:
A.
0.2.
B.
0.4.
C.
0.6.
D.
2.5.
E.
6.0.
【简答题】请简述专利申请的基本条件。
【单选题】If at a price of $10, quantity bought will be 5400 per day, and at $15, quantity bought will be 4600 per day, then the price elasticity of demand is approximately:
A.
0.2
B.
0.4
C.
0.6
D.
2.5
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