想問各位：本生燈打開左氣孔之後火焰係咪 一定 會變成藍色？

同個老師傾緊係咪一定會 ( English Conditional ) .. 關乎小弟考試嘅分數 請大家幫幫手
* 同埋最好有參考資料 .. Thz

呢d 應該計落always true 同係 general case
我諗應該係 The flame is blue if the air hole of bunsen burner is on.
唔肯定用字有冇錯, 但我諗係用呢種condition

例如我地教conditional sentence 有句例句係 if a baby is hungry, it cries.
即係generally speaking, BB仔肚餓就喊係 always true, 但當然一定有一d extreme exceptional case

就好似 bunsen burner 咁, 開左氣孔有藍火係 always true
但極端例外可能係開左air hole, 但根本冇著到火, 所以冇藍火出現

(廢話多言了)

本生燈係會視乎煤氣量變成無光焰/藍光焰
當然先決條件係要氣孔開到最大

Theoretically nothing is always true, but of course, that involves a lot of philosophical thinking.
Examples may include having no oxygen in the surrounding (thus no flame), gas supply off (no flame), not enough oxygen (still orange flame) ......

But for normal circumstances you can assume this to be true.

小弟冇讀P,C,B
但英文都一般般既.

好多時Conditional Sentance 既 Type Zero, 即係Always True既野, 會有句例句：
Water boils if it is at 100℃.
當然會有數上講既extreme exceptional case, 例如水在高壓下, 沸點會提高.

F.1教過, 如果點火果陣air hole close 係開咗既,
會出綠色火焰, 到其時技Bunsen Burner 會非常熱, 要即刻揾老師