变压器一次绕组加额定频率的额定电压，在给定的负载功率因数下，二次空载电压和二次负载电压之差与二次额定电压的比值称为变压器的电压调整率。

什么是变压器的额定电流、空载电流、额定电压、短路电压？

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。

求额定电压为35／11kV，额定容量为10000kVA的三相变压器和单相变压器的一、二次绕组的额定电流？

三相变压器的额定容量为额定电压与额定电流乘积的3倍。

单相变压器的额定容量为额定电压与额定电流的乘积，三相变压器为额定电压与额定电流乘积的3倍。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。