在三面投影体系中，侧垂面在（）投影面上的投影积聚为直线。

在三面投影体系中，同一形体体的三个投影图之间具有（）关系。

直线在三面投影体系中有三种位置：（），投影面平行线，一般位置线。

在三面投影体系中，主视图，俯视图，左视图之间保持（），（），宽相等的原则。

在三面投影体系中，水平投影面（H面）与正立投影面（V面）的投影规律为（）。

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。