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 （）.

宪法规定，国务院实行（）负责制。

我国宪法规定：“国务院实行总理负责制。各部、各委员会实行部长、主任负责制”，县级人民政府实行（）

我国宪法规定，中央军事委员会实行（）负责制。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

我国实行国务院总理负责制属于（）。

我国实行的国务院总理负责制属于（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。