Exercise 1.1.1.5: Listen to the audio recording about safety when working on a machine (pages 1:11 – 1:12)
without looking in the book and fill in the gaps using the following words or short phrases (each one must be used only once)
audio_symbol 2.jpg

   explodes      main power      marking      running      switch      valve   
1. You should never do repair and maintenance work on a machine when its motor is .
2. A may jam or somehow open even if nobody is operating it.
3. Before starting work in the harvester head you should turn off the main power , remove the key and put it in your pocket.
4. All wood should be done from the ground.
5. If the battery , its top goes flying and may seriously hurt you or a collegue.