A. 有形贸易 B. 无形贸易 C. 总贸易 D. 专门贸易
A. 对 B. 错
A. 代理租船订舱 B. 代理转运及理货 C. 代理货物报检、报关 D. 代理储存、包括货物保管、整理、包装以及保险等业务
A. a kind of behavior acquired by experience B. always associated with voluntary behavior C. a learned response pattern D. an inborn response pattern