【单选题】Classical trade theory emphasized which of the following as an underlying explanation of the basis for trade?
A.
Productivities of labor inputs
B.
Tastes and preferences among nations
C.
Changes in technologies over time
D.
Quantities of economic resources
【单选题】不符合三阶梯止痛治疗方案用药原则的是(B) A. B. C. D. E.
【单选题】不符合三阶梯止痛治疗方案的用药原则是()
【单选题】不符合三阶梯止痛治疗方案用药原则的是( )
【单选题】According to the classical theory of international trade
A.
only countries with low wages will export.
B.
only countries with high wages will import.
C.
countries with high wages will have higher relative prices of all goods.
D.
All the above are false.
【单选题】下列措施不符合世界卫生组织提出的癌症三阶梯止痛治疗方案原则的是
【单选题】带DSC终端的VHF设备中,字符中码元的“传号”对应的频率是:
【单选题】不符合三阶梯止痛治疗方案用药原则的是()