（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

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 （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

生产方式是人类社会存在和发展的决定性力量，这是因为( )。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

人类社会存在和发展的基础和决定力量是

人类教育赖以生存和发展的决定性力量是（）

人类教育赖以存在和发展的决定性力量是社会生产。