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.

测绘应当使用国家规定的测绘基准和测绘标准。

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。

属于基础测绘项目的，应当汇交测绘成果（）；属于非基础测绘项目的，应当汇交测绘成果（）。

何谓测绘产品？测绘单位对测绘产品质量负有怎样的责任和义务？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。