（）, 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 （）.

在下列哪些情形下，公司债权人有权要求公司提前清偿债务或者提供相应的担保（）。

公司企业的董事、经理以公司资产为公司的股东或者其他个人债务提供担保的而造成担保合同无效。除债权人知道或者应当知道的外，债务人、担保人应当对债权人的损失承担（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

依我国《担保法》规定，选项所列合同中（）合同债务人不履行债务的，债权人享有留置权。

依我国《担保法》的规定，下列合同中哪些合同债务人不履行债务的，债权人享有留置权（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。