【简答题】Either he or I ____ to attend the mass meeting this evening.(be) 52. ____ either he or I to attend the mass meeting this evening. 53. An iron and steel works, with some satellite factories, ____ to be...
【单选题】The situation in Haiti after the earthquake was all in a mess, ______ the increasing number of robbery cases.
【判断题】点火系故障将导致无火、断火、弱火、错火和点火不正时。
【单选题】点火控制器是电子点火系统的核心部件,又叫点火器。它的作用是利用信号发生器产生的电信号使其内部的大功率三极管不断导通和截止,以控制( )的通断。
【多选题】压路机中点火系统中的电容器的作用是()。