On the other hand, it has the same disadvantages as 1. high cost and power consumption. 2. frequent crashes may cause passengers trapped in an elevator.3. If access from Verizon, you may cause an accident.
On the other hand, it has disadvantages such as: 1. power and high costs. 2. Risk of failure often makes passengers stuck in elevator 3. - out of the elevator can cause accidents.
On the other hand, it has disadvantages as well as 1. Energy use and high cost. 2. May failure often make the passengers trapped in the elevator 3. If the in - out of the elevator may cause an accident.