10. 柴油機的氣門定時(valve timing)，係以下列何者來表示進氣閥、排氣閥、噴油閥與空氣起動閥之正確開啟與關閉？ (A) 曲柄角 (B) 連桿角 (C) 活塞位移 (D) 十字頭位移

8. Which of the following statements is false? (A) An orbital can accommodate at most two electrons. (B) The electron density at a point is proportional to ψ2 at that point. (C) The spin quantum number of an electron must be either + . (D) A 2p orbital is more penetrating than a 2s; i.(E), it has a higher electron density near the nucleus and inside the charge cloud of a 1s orbital.