5. 柴油機發生爆震的主要原因為？ (A) 冷卻水溫度過高 (B) 引擎轉速過高 (C) 點火延遲時間過長 (D) 燃料燃點過低

1.The following reactions 2K(s) + Br2(l) → 2KBr(s) AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) HCl(aq) + KOH(aq) → H2O(l) + KCl(aq) are examples of (A) precipitation reactions (B) redox, precipitation, and acid-base, respectively (C) precipitation (two) and acid-base reactions, respectively (D) redox reactions (E) none of these