铵梯炸药是以硝酸铵为氧化剂、梯恩梯为敏化剂、木粉为可燃剂和松散剂组成的爆炸性混合物，其中敏化剂为有毒物质。

矿山常用的硝铵类炸药有铵梯炸药、铵油炸药、铵松蜡炸药和煤矿炸药。

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（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

铵梯炸药中（）作用是阻止硝酸铵发生结块，作疏松剂。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。