Colombo is one of the port cities of（）

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• A Contract of Affreightment covering the movement of a particular cargo from one designated port to another at a specified rate for each ton of goods loaded is called a（）.

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• （）is the price paid to a Shipowner for the transportation of goods or merchandise by seafrom one specific port to another．

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• According to the customs of this port，the work of opening and closing hatch covers is done by （）.

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• What is the port number of an IPsec Encapsulating Security Payfoad packet？（）

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  A、operating B、to be operated C、to operate D、operated

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• The name and hailing port of a documented commercial vessel is（）.

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• Which one of the following varieties of NAT utilizes different ports to map multiple IP addresses to a single globally registered IP address?（）

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• One of the following is not one of the world’s major ocean basins（）

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