If a country can sell its products abroad, it means
A.it can earn more money by expanding its production.
B.the employment rate of the country will decrease.
C.the country has to find an outlet for going abroad.
D.it can buy from foreign countries products and services that are scarce or unavailable at home.
第1题
氯霉素眼药水中加入硼酸的主要作用是
A.增溶
B.调节pH值
C.防腐
D.增加疗效
E.以上都不是
第3题
霉素眼药水中加入硼酸的主要作用是
A.增溶
B.调节pH值
C.防腐
D.增加疗效
E.以上都不是
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