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 （）.

1911年爆发的辛亥革命，进步意义在于推翻了清朝的统治，彻底废除了封建专制制度，建立了“中华民国”。

俄国“二月革命”于（）历史性地推翻了沙皇政府和君主制度。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

袁世凯窃夺辛亥革命的果实之后实行封建军阀专制统治的方式是（）

袁世凯窃夺辛亥革命的果实之后，建立了代表大地主和买办资产阶级利益的北洋军阀反动政权。封建军阀的专制统治表现为（）

辛亥革命结束了统治中国两千多年的封建君主专制制度，使民主共和的观念开始深入人心。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。