货物的装载高度、宽度有何要求？
参考答案：
货物的装载高度、宽度和计算宽度，除超限货物外，不得超过货物装载限界和特定区段装载限制
高架道路和高速公路的道路保洁一般采用机扫。
Without facts, we can’t form a correct opinion, for we need to have actual knowledge___ our thinking.[ ]
A. which to be based on
B. which to base on
C. on which to base
D. which to base
