题目内容：
（ ）是运输产品最显著和最重要的特性之一。
A．空间性 B．劳务性
C．时间性
D．有偿性
参考答案：
答案解析：
单选题：（ ）是运输产品最显著和最重要的特性之一。
- 题目分类：中级运输经济(铁路)
- 题目类型：单选题
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B．劳务性
C．时间性
D．有偿性
B．劳务性
C．时间性
D．有偿性
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