在线性规划问题中，基可行解的非零分量所对应的列向量线性（）

在下列线性规划问题的基本解中,属于基可行解的是（  ）

下列关于可行解,基本解,基可行解的说法错误的是（  ）. 

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。

从一个基可行解到另一个基可行解的变换，就是进行一次（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

若基本可行解中的非零变量的个数小于m，即基变量出现零值时，则此基本可行解称为（）。