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.

纯滚动高副,其接触点即为瞬心

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。

车轮在轨道上运动，在接触处如果保持相对静止，轮轨之间没有相对滑动，则车轮做（）。

一个物体在另一个粗糙物体表面滑动、有相对运动趋势的滚动、则物体受到滑动摩擦力、静摩擦力或滚动摩擦力。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。