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Qingdao air defense alert what does Qingdao air defense alert mean

Original title: don't panic when you hear this sound today. Qingdao sounded the air defense alarm signal

On November 14, 1897, the German invading army forcibly landed on the trestle and occupied Qingdao by armed forces. In 1998, the Qingdao Municipal People's government designated November 14 as the "air defense alarm test day." Jindun-2019 'Qingdao civil air defense exercise will be held from 10:00 to 10:20 on November 14, 2019. The alarm trial sound includes four signals: first, the air defense alarm sound signal issuing procedure and signal regulations. The pre alarm sound is 36 seconds, 24 seconds and repeated three times. Time: 3 minutes. The air raid alarm sound is 6 seconds, 6 seconds and repeated 15 times. Time: 3 minutes. On November 14, 1897, the German invading army forcibly landed on the trestle and occupied Qingdao by force. In 1998, the Qingdao Municipal People's government designated November 14 as the "air defense alarm test day".

'jindun-2019' Qingdao civil air defense exercise was held from 10:00 to 10:20 on November 14, 2019.

The alarm trial sound includes four signals:

1、 Air defense alarm sound signal issuing procedures and signal regulations

The pre alarm sounds for 36 seconds, stops for 24 seconds and repeats for 3 times

Time: 3 minutes

The air raid alarm sounds for 6 seconds, stops for 6 seconds and repeats for 15 times

Time: 3 minutes

Release the alarm for 3 minutes

2、 Procedures and signal regulations for sound signal issuance of disaster alarm

Sound for 15 seconds, stop for 10 seconds, and then sound for 5 seconds, stop for 10 seconds

Repeat 3 times for a cycle time of 2 minutes.

3、 Interval time of various alarm signals and total trial sounding time

The interval between various alarm signals is 3 minutes, a total of 20 minutes

Please listen carefully to the pre alarm, air raid alarm, release alarm and disaster alarm signals, and maintain normal production, life and work order.

Original title: don't panic when you hear this sound today. Qingdao sounded the air defense alarm signal

2、 Sound signal issuing procedure and signal regulations for disaster alarm sound: sound for 15 seconds, stop for 10 seconds, then sound for 5 seconds, stop for 10 seconds, repeat for 3 times, and the cycle time is 2 minutes. 3、 The interval time of various alarm signals and the total time of trial ringing are 3 minutes, a total of 20 minutes. Please listen carefully to the pre alarm, air raid alarm, release alarm and disaster alarm signals, and maintain normal production, life and work order.