低频变压器可分为（）变压器，耦合变压器，输入、输出变压器等。

低频变压器可分为（）变压器．藕合变压器，输入、输出变压器等。

低频变压器可分为电源变压器，（）变压器，输入、输出变压器等。

低频变压器可分为（）变压器、耦合变压器、输入、输出变压器等。

校办工厂装接容量在315kV·A以下的执行普通工业电价。( )

焊接工形截面钢梁设置腹板横向加劲肋的目的是(    )。

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

加油站经理认证考核（试）包括理论知识考试和实操技能考核。其中理论知识考试（）分以上为合格，实操技能考核（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。