解词，并解释其中加粗的字。    

(l)油光可鉴：                                                                       

(2)抑扬顿挫：                                                                   

(3)模胡：                                                                   

(4)掌故：                                                                   

(5)匿名：                                                                   

(6)诘责：                                                                   

(7)凄然：                                                                   

(8)杳无消息：                                                                   

(9)适值：                                                              

真空式点火提前调节装置的作用是随发动机（）的变化而自动调节（），是通过改变（）与（）的相位关系的方法来进行调节。