水准测量中应用十字丝的（）丝照准水准尺读数。

水准测量时对某一水准尺进行观测时的基本步骤是粗平、瞄准、精平和（）。

水准测量时对某一水准尺进行观测时的基本步骤是粗平、瞄准、（）和读数。

精密水准仪的操作程序和方法与一般微倾式水准仪相同,包括安置粗平,照准对光,精平读数等步聚,连读数方法都完全相同。

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。

水准测量中，欲消弱照准误差，采取的方法为（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。