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Telecommunication Services

question 1 of 4 Grade: Twelve - G12
question 1 of 4 Grade: Twelve - G12

Q: What is the meaning of the following: i. Private branch exchange (P.B.X) ii. Private automatic branch exchange(P.A.B.X) iii. Private manual branch exchange(P.M.B.X) iv. Subscriber trunk dialing(S.T.D) (b) What is the role of the post office in Uganda?

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Hydrogen reduces copper(II) oxide to copper: CuO + H2 → Cu + H2O. Hydrogen is oxidized to water in this reaction.

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Hydrogen reduces copper(II) oxide to copper: CuO + H2 → Cu + H2O. Hydrogen is oxidized to water in this reaction.

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