电子商务，最早的发展阶段是（）。

可以在（）阶段采用Make-or-buy决策分析。

电子商务的发展经历了哪些阶段？（）

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

电子商务的发展历程可分为四个阶段，第一个阶段是（）。

国家电子商务发展发展规划的第二阶段为发展阶段。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。