语言符号的形式是（），语言符号的内容是（）。

语言符号的（）和（）是语言符号的基本性质。

二进制语言，符号语言，汇编语言都是低级语言，低级语言称为面向（）的语言，高级语言称为面向（）的语言。

语言符号具有二层性，其核心是（）。

符号对应化手法与语言有一定的关系，俗约性符号类似于自然语言，自约性符号类似于人工语言。

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, 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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。