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About the safe operation of the laboratory is correct ()
About the safe operation of the laboratory is correct ()

A. When strong acid and alkali splash on the skin in the laboratory, wash it with plenty of water (correct answer).

B. When disassembling glass tubes and hoses, soak them with water and put cotton cloth on your hands (correct answer).

C. When opening the stoppers of reagents such as concentrated sulfuric acid and concentrated nitric acid, take protective articles, and don't aim the bottles at people when opening them (correct answer).

D before wiping the electrical equipment, make sure that the power supply has been completely cut off, and it is forbidden to touch the electrical equipment with wet hands (correct answer).

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