输出继电器（OR）通过一对（）触点将PLC的控制信号传递给负载。

根据《土壤环境质量》，土壤环境质量标准分为(   )级。

纺织品按纺织工艺可分为（　）类。

纺织品按其用途可以分为（）、装饰用纺织品、产业用纺织品三大类，称为纺织行业三大支柱。

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。

在纺织行业选择搞纺纱织布的生产、在电子行业搞元器件生产，这些活动是（）的具体体现。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。