对金属进行加工时，应如何考虑纤维组织的分布？

用于制造压力容器的材料都应为金属材料，不存在用非金属材料制造的压力容器。

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。

按照金属在焊接过程中所处的状态及工艺特点的不同，可以把金属的焊接方法分为熔焊、（）和钎焊三类。

锻压加工时，（）方式金属加工前不必加热。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

金属离子置换修饰是将（）中的金属离子用另一种金属离子置换。