Owners are to be responsible for loss of or damage to the goods or delay in delivery of the goods only in case the loss，damage or delay has been caused by the improper or negligent stowage of the goods．This means that（）.

These natural resources will be______sooner or later if the present rate of exploitation continues.

如何界定西方经济学？ 试述西方经济学的研究对象和研究方法。

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（）.

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.

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

学习西方经济学的目的是什么？借鉴西方经济学应注意什么问题？

边际收益递减律（Law of diminishing marginal returns）

边际产品转换率（Marginal rate of product transformation）

Marginal revenue product（of an input），（ MRP） （一种投入的）边际收益产品

国际经济学是西方经济学的并列学科。

国际经济学跟西方经济学没有关系。