用经纬仪观测水平角时，尽量照准目标的底部，其目的是为了消除（）误差对测角的影响。

用经纬仪观测水平角时，尽量照准目标的底部，其目的是为了消()误差对测角的影响。

经纬仪测量水平角时，用竖丝照准目标点；测量竖直角时，用横丝照准目标点。

经纬仪测量水平角时，用竖丝照准目标点；测量竖直角时，用横丝照准目标点。

用经纬仪观测水平角时,对中的目的是 ___ ,整平的目的是 ___。

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。