输出继电器（OR）通过一对（）触点将PLC的控制信号传递给负载。

神经-肌肉接头传递中，消除乙酰胆碱作用的酶是（　）

神经-肌肉接头传递中，消除乙酰胆碱作用的酶是（）

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。

下列哪项不是神经-肌肉接头兴奋传递的特点（）。

下列哪项不是神经-肌肉接头兴奋传递特点

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。