下列作品属于元代戏剧作家关汉卿的是（）。

元代南戏四大传奇不包括（）。

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.

火药是中国古代的四大发明之一，下列关于火药的说法不正确的是（）。

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。

元代最优秀的剧作家关汉卿，其出色的代表作是( )

元代是（）发展鼎盛的时期，出现了关汉卿等一批杰出的剧作家，产生了大量优秀戏曲作品。