约翰·凯奇演奏《4分33秒》是无声音乐，其主要目的是表明一种音乐观念，即音乐就是生活，生活就是音乐。

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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

（）是新疆维吾尔族著名的古典音乐，由声乐、器乐、舞蹈组合而成。

我国民间音乐主要分为五大类别（）、民间舞蹈音乐、说唱音乐、戏曲音乐和民间器乐。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

音乐不能直接传达思想概念是因为音乐不具有：（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。