简述布尔算符（OR）的作用。

简述董其昌的生平及代表性画论思想著作。

东晋杰出的画家,理论家顾恺之画论著作有三篇:《魏晋胜流画赞》、______、《画云台 山记》,这是中国最早的专门画论。( )

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.

辽沈战役与《历史不容篡改》一画有密切的联系。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

中国古代画论中有不少论述（）与生活的客观联系

简述石涛“一画”的含义。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

简述历史课程资源的含义与类型。