把GIS分为专题地理信息系统和综合地理信息系统是按（）。

把GIS分为专题地理信息系统和综合地理信息系统是按（）。

管网GIS即管网地理信息系统。

地理信息系统GIS的最基本职能是( )。

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.

为什么要做信息系统规划？信息系统规划有哪些基本内容？信息系统规划有哪些常用的方法？

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。