题目内容
(请给出正确答案)
[主观题]
Currently, different types of multimodl trnsport opertion involving differentCurrently, di
fferent types of multimodl trnsport opertion involving different combintionsre tking plce. () is one types of multimodl trnsport opertions but not involving ril.Lnd bridge B.ir/se C. Se trin D.Piggybck
A.Land bridge
B.Air/sea
C.Sea train
D.Piggyback
![](https://lstatic.shangxueba.com/sxbcn/h5/images/tips_org.png)