Why is it required that workers working at heights of over 30 meters must be equipped with communication devices?
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Why is it required that workers working at heights of over 30 meters must be equipped with communication devices?
It’s easier for communication, right? Sound waves have limited range at 30 meters
Say goodbye to the era when communication mainly relied on shouting
The bookboy database is with me at all times; I wish the group owner happiness
The shouts can’t be heard, and the signal is unclear
With the arrival of the bookboy database, my life has become even more meaningful: thanks to the presence of the group leader and their companionship.
With just one article, I offer a thousand gold pieces as thanks for your kindness; I am grateful for the wonderful resources available, as well as for the family bonds, friendships, and loves around me. Wish everyone happiness, joy, health, and safety.
Thank you for always being there in my studies! Thank you for spending every happy day with me and for helping me grow
I can’t hear the voice of the guy on the ground, and I can’t see the dance happening on the ground.
Thank you to the original poster for the enthusiastic sharing; I’m very grateful
There are houses of gold in books, and there are beautiful women in books. The group owner posts hard; everyone should study hard!*