OR指令的作用是: 。( )

如何在指令中表示操作数的地址？通常使用哪些基本寻址方式？

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。

计算机指令系统中采用不同寻址方式的主要目的是(1)。在下列寻址方式中取得操作数速度最慢的是(2)。

计算机指令系统中采用不同寻址方式的主要目的是(3)。在下列寻址方式中，取操作数速度最慢的是(4)。

F1系列PLC—OR指令表示（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。