1980年《联合国国际货物销售合同公约。规定公约适用于（）位于不同国家的当事人之间所订立货物买卖合同。

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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

可撤销婚姻是指已成立的婚姻关系因欠缺缔结婚姻的合意，经由当事人申请而撤销的违法结合。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

预测方法很多，不同的预测方法往往有不同的适用范围，有的方法适用于长期预测，有的则适用于中、短期预测，等等。例如定性方法往往适合于________。