家庭系统理论的核心概念是家庭系统，家庭核心概念的核心要素不包括（　）。

家庭系统理论的核心概念是家庭系统，家庭核心概念的核心要素不包括（　　）。

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。

老子的核心概念是什么？（）

老子的哲学思想的核心思想（）。

《老子》的文学性主要表现是什么？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。