对于一般的坐姿作业，作业面的高度在肘高以下（）左右。

简述坐姿作业的特点？

坐姿作业特点？

简述人体生理功能活动的调节方式、特点。

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。

作业前，将（），坐姿端正，目视前方。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。