功率因数越低，说明无功功率越大

电动发电机的额定功率因数反映了它对电力系统输出无功功率的能力。功率因数越小，表示电机发出的无功功率能力越大。

（）是认证制度的基础，标准水平越高，被认证的产品的质量水平越高。

ups的输入功率因数越大，对电网干扰越（）。

Hurry up, or you ______ catch the train.

网络认证技术只是单向认证技术

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.

双向身份认证是指移动用户与移动通信网络之间相互认证身份。

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。