机械密封的基本组成单元是密封单元、缓冲补偿单元、传动单元、辅助密封单元组成。

不管是手工会计还是电算化会计，对发生的经济业务都要运用（）原理，编制会计分录、记账、编制会计报表。

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。

组成发动机的最小单元体叫（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

单元机组是如何组成的？单元机组有什么特点？

零件与构件的区别在于：构件是（）的最小单元，零件是（）的最小单元。