物流最重要的子系统是（）
A.运输
B.仓储
C.流通加工
D.包装
E.配送
参考答案：A, B
I was born and began to study at this school . [ ]
A. in 1970; in the 1980
B. in the 1970; in 1980s
C. in 1970; in the 1980s
D. in 1970s; in the 1980s
婴儿多见，以喘息为突出表现的是
A．金黄色葡萄球菌肺炎B．腺病毒肺炎C．毛细支气管炎D．支原体肺炎E．支气管肺炎
