网络数据库是获取信息的一种较好的途径，以下说法不恰当的是（）。

万方数据库使用布尔逻辑算符anD./or/not.其中A.anD.B表示（）。

在地理信息系统中，为什么要进行矢量数据和栅格数据的转换，其转换的方法有哪些？

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.

QueryString获取方法、Form获取方法获取的数据子类型分别是：（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

矢量数据结构，矢量数据的获取途径。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。