Question

What do the following signs mean?

Answer 1

1. The caution means that we are now allowed to enter the room
2. The caution prohibit us to bring food and drink
3. The caution tell us to wash our hand after the experiments
4. The caution prohibit people to smoking
5. The caution order us to keep the cleanliness
6. The caution tell us that there is a wet floor and remind us to be more careful because there is a wet floor
7. The caution tell us to turn of the phone in that area
8. The caution tell us that there is a flammable object and remind us to be more careful

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