lauchunda

1.burning
2.fire triangle
3.photosynthesis
4.destarching
5.food chain
6.respiration
7.gaseous exchange
8.breathing mechanism
9.breathing mechanism
10.greenhouse effect
11.greenhouse gas
12.pollution
13.passive smoking
   



1.closed circuit
2.open circuit
3conductor
4.insulator
5.resistance
6.resistor
7.rheostat
8.series circuit
9parallel circuit
10fuse
11.circuit breaker
12.live wire
13neutral
14earth wire
15short circuit


你地識得幾個??

[ 本帖最後由 lauchunda 於 2010-1-3 11:37 編輯 ]