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You should _______________ to one or more weekly magazines such as Time or Newsweek.

— What would you like to have, meat or fish?

— _____________________.

— ___________________

— Once or twice a week.

All students are eager to know ______________they wilt pass the exam or not
三相异步电动机常用的电气制动方法有___和___。
单侧电源线路的自动重合闸装置必须在故障切除后,经一定时间间隔才允许发出合闸脉冲,这是因为 ______
Whether we will go or not __________ the weather.
Which ________ do you prefer, coffee or orange juice?
All students are eager to know ______________they wilt pass the exam or not
自动空气开关的电气符号是________。
能用来表示电机控制电路中电气元件实际安装位置的是________。
Tables______ of stones or wood.
Do you feel like ________ to a film or would you rather ________ at home.
Without water, _________ no plants or animals.
I am wondering if they are ____ or____.
下列电气装置属于工作接地的是_______。
离心泵必须_______闸启动;轴流泵必须_______闸启动。
液压泵是_____ 元件。是把原动机输入的 ________转变成 _______输出的装置。按结构分为 ______泵, ______泵和 _____泵。
液压与气压传动系统由____ 、_____ 、_____ 和辅助元件四个部分组成。
防止雷直击于发变电站,可以装设________来保护。
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