歌剧《璐璐》是奥地利作曲家（）的代表作品之一。

音乐剧《悲惨世界》、《西贡小姐》是著名作曲家勋伯格的作品。

深刻理解一部音乐作品的内容，必须（）。

被誉为“俄罗斯民族音乐之父”的是作曲家（），他创作的歌剧《（）》和管弦乐幻想曲《（）》分别开创了俄罗斯民族歌剧和民族交响乐。

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。

德国歌剧作曲家韦伯的歌剧作品有（）。