题目内容
(请给出正确答案)
[主观题]
Currently,different types of muhimodl trnsport opertion involving different combintionCurr
ently,different types of muhimodl 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
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