Shutdown price（or point，or rule） 停业价格（或停业点、停业原则）

翻译：With Average or With Particular Average（WA or WPA）（）

一台异步电动机由频率为50HZ的电源供电，其额定转速为nN=730转/分。求此电动机的磁极对数。同步转速及额定负载时的转差率？

汽轮机危急保安器动作转速整定为额定转速的109%～111%，且两次动作的转速差不应超过额定转速的0.6%。

机组在停机过程中，转速在（）额定转速时自动投入高压顶起，在（）额定转速时自动投入刹车。

我国电网交流电额定频率为（）赫，汽轮发电机的额定转速为（）转/分。答

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.

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。

汽轮机正常的调节系统在外负荷不变时，能保持机组功率和转速不变。（）