运输需求
参考答案：
是社会经济生活在人与货物空间位移方面所提出的有支付能力的需要。
为了贯彻研究伦理的要求，英国的FRE规定：研究必须经过（）、审查。
句型转换。
In the accident many people were killed, but meanwhile there were some who were unhurt.
In the accident many people were killed, but there were some who were unhurt.
