运输规模经济之所以存在,是因为有关的变动费用包括燃料的消耗、货物的装卸费用等,可以按整批货物的质量分摊,降低了单位货物运输的成本。
参考答案:错
Australia is the smallest continent(洲) in the world. It is a little smaller than China. It is near the south of the equator(赤道).So when it is summer in our country, it is winter in Australia.
Australia has a small population (人口).The population of Australia is nearly the same as that of Shanghai, a city in China.
Australia is famous for its sheep and kangaroos. After driving for a short time from any town, you will find yourself in the middle of white sheep. Sheep are everywhere. Have you seen a kangaroo? It has a “bag” below its breast(胸). The mother kangaroo keeps its baby kangaroo in the “bag”. It is very strange, isn’t it?
小题1:China is __________than Australia.
A.larger
B.large
C.small
D.smaller小题2:It is ________in Australia when it is summer in our country.
A.autumn
B.spring
C.winter
D.summer小题3:Australia is famous for its _________.
A.kangaroos
B.deer
C.elephants
D.birds
以中文药学文献数据库为基础,收集国内700多种医药期刊以及会议论文和部分内部刊物的资料,以文摘、提录等形式报道()
A.香砂平胃丸
B.香砂养胃丸
C.木香顺气丸
D.加味保和丸
E.加味左金丸