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【单选题】
下面关于停止营业点的描述正确的时（ ）。A.
价格小于最低的平均可变成本
B.
价格等于最低的平均可变成本
C.
价格大于最低的平均可变成本
D.
以上都不对
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举一反三
【多选题】Which of the following transport modes are belong to multimodal transport? ( )
A.
sea/air
B.
air/road
C.
piggyback
D.
sea/piggyback
【单选题】Which of the following is intermodal transport?
A.
Water transport.
B.
Air transport.
C.
Truck transport.
D.
Transport with several modes.
【单选题】In a data communication system, which transport media can be described as following: Has two classes: single mode and multiple mode with higher transmit rate with the best reliability
A.
radio channel
B.
fiber optic cable
C.
twisted-pair cable
D.
coaxial cable
【单选题】Which of the following transport mode is suitable for the door to door transport?
A.
Sea/air
B.
Mini-bridge
C.
Piggyback
D.
Land bridge
【单选题】Muhimodal transport refers to a transport system usually operated by a carrier with more than one mode of transport under the control or ownership of one operator．( )
A.
正确
B.
错误
【简答题】when the system upon which a transport entity is running fails and subsequently reatarts，the（）information of all active connections is lost.the affected connections become half-open，as the side that d...
【简答题】Sea train is another innovation in the muhimodal transport system which is the same as roll-on， roll．off system．（ ）
【单选题】Which is the earliest mode of transport?
A.
Air transport
B.
Sea transport
C.
Human-powered transport
D.
Pipeline transport
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