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Watch Later 16:48

By: t2108, Views: 368

Short revision of the properties of voltage and resistance.

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By: t2108, Views: 432

Short revision of series circuits and parallel circuits.

Watch Later 36:25

By: t2108, Views: 374

Short revision of household appliances, working principle of earth wire and fuse.

Watch Later 2:40

By: t1110, Views: 182

MATH_DSE_2015_Paper2_Q38

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By: t1110, Views: 176

MATH_DSE_2018_Paper2_Q38

Watch Later 34:17

By: t2108, Views: 396

Short revision of air composition, and simple facts about photosynthesis.

Watch Later 2:50

By: t1110, Views: 192

MATH_DSE_1999_Paper2_Q15

Watch Later 1:40

By: hlwong, Views: 428

2022年1月27日班主任節普通話祈禱

Watch Later 1:12

By: t1110, Views: 187

MATH_DSE_1999_Paper2_Q17

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