单项选择题
A.Package B.Containerization C.palletizing D.sorting
（）is to protect goods not to be deteriorated like for a...
单项选择题（）is to protect goods not to be deteriorated like for and medicine.
A.packaging B.special packaging C.green packaging D.vacuum packaging
（）is the way to deliver goods for different shippers in...
单项选择题（）is the way to deliver goods for different shippers in the same truck by the most economic route.
A.Joint distribution B.United distribution C.Multiple deliveries D.joint delivery
（）is not a physical wall but a flow virtual data to pro...
单项选择题（）is not a physical wall but a flow virtual data to protect the computer network.
A.data wall B.data channel C.database D.firewall
