锅炉汽包水位控制方案中的双冲量、三冲量控制系统属于前馈—反馈控制系统。

输出继电器（OR）通过一对（）触点将PLC的控制信号传递给负载。

1985年，江西工学院更名为（）；江西大学和江西共青垦殖场联合创办了江西大学共青学院。

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。

山西大学改为国立后，工学院存在哪些系？（）

什么是三冲量给水自动调节系统？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。