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 （）.

The（）may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.

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

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。

住宅建筑楼梯踏步宽度不应小于（），踏步高度不应大于0.175m。扶手高度不应小于0.90m。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

《高层民用建筑设计防火规范》规定，高层建筑每层疏散楼梯总宽度应按其通过人数每100人不小于1米计算，住宅建筑疏散楼梯的最小净宽度不应小于（）米