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 （）.

（）are liable to be stoten, pilfered or may damaged due to improper handing or stowage.

《合同法》规定了债权人行使撤销权的规则。下列关于撤销权的说法中，正确的有（）

《合同法》规定，撤销权行使的时效从债权人知道或应当知道撤销事由之日起（），自债务人的行为发生之日起（）没有行使撤销权的，该撤销权消灭。

《合同法》规定了债权人行使撤销权的规则。下列关于撤销权的说法中，正确的有()

Banks have no liability for any delay or loss caused by postal or telex failure.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。