网络地址转换（NAT）有三种类型：（）、（）、网络地址端口转换NAPT（Port－LevelNAT）。

Which three flow-control port states lead to enabled link flow control？ （） A:  Receive port： Enabled， Transmit port： Enabled B:  Receive port： Enabled， Transmit port： Desired C:  Receive port： Enabled， Transmit port： Disabled D:  Receive port： Disabled， Transmit port： Desired E:  Receive port： Desired， Transmit port： Desired

The port in which crew or passengers go on board the ship is called（）. A: port of call B: port of embarkation C: port of destination D: port of disembarkatio

CIF should be followed by( )． A: port of transshipment B: port of destination C: port of call D: port of shipment

In CIF the risk passes at _______ while the costs are transferred at _________. A: port of shipment, place of destination B: port of shipment, port of destination C: port of destination, place of shipment D: port of destination, port of shipment

The term FOB should be followed by _________ A: port of importing B: port of shipment C: port of discharge D: port of origin

Hie price term FOB should be followed by the name of_______. A: port of destination B: port of shipment C: port of destination D: port of consignee

1. Port of Registry refers to the port where ________.

当PORT端口地址范围是0-255时，输入指令是 A: IN AL,DX B: IN DX,PORT C: IN PORT, AL D: IN AL,PORT

Port of destination is the port where goods are shipped and depart.