In these circumstances, it is not advisable to take the elevator

In these circumstances, it is not advisable to take the elevator
1, the elevator abnormal sound
2, elevator car floor and floor if uneven
It is best not to take the elevator during a thunderstorm
(Because the elevator room is usually at the highest point on the roof, it is easy to attract lightning)
4. Do not take the elevator that is nearly full
5, in the event of a fire, try not to take the elevator (prone to smoke suffocation; The elevator may lose power at any time)