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。

何谓不可抗力条款？为什么要在进出口合同中规定不可抗力条款？

合同中的适应性条款是指诸如不可抗力条款、灵活价格条款、双方协商条款等。

合同中的适应性条款是指诸如不可抗力条款、灵活价格条款、双方协商条款等。

技术贸易合同中的不可抗力条款是免责条款。（）

合同中的不可抗力条款又称免责条款，关于免责条款错误的描述是：（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。