社会保障（Social Security）一词，最早出自美国1883年的《社会保障法》。

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。

“隐性课程”一词最早出自（ ）。

“隐性课程”一词最早出自（ ）

“实事求是”一词出自哪部典籍（）。

提喻法（Synectics）一词最早出自希腊语，意思是将不同的看上去无关的因素联系起来，其核心是（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。