输出继电器（OR）通过一对（）触点将PLC的控制信号传递给负载。

现代科学技术和现代科学管理，是实现“四化”的（），两者（）不可，现代科学技术必须通过现代科学管理才能（）。

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.

加氢改质装置的降凝催化剂是（）形。

论述中国梦的科学内涵以及实现途径？结合本身实际谈谈要实现中国梦当代大学生需要做好哪些准备？

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。

布尔逻辑具体检索时，是通过三个布尔运算符来实现其功能的：AND、OR、（）。