伟晶矿床的结构

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 （）.

为什么把系统科学作为环境地质学的基础理论？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

矿床勘察类型：在矿体地质研究和对以往矿床勘察经验总结的基础上，按照矿床的主要地质特点及其对勘查工作的影响（即勘查的难易程度），将（）加以理论综合与概括而划分的类型。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。