Which of the following is TRUE about the man

A．He didn’t suspect that she already knew his past.

B．He realized that she knew very few about him.

C．He suspected her because she knew almost everything.

D．He suspected her past.

分火头根据各缸的工作需要将高压电分配给各缸（）。

A.旁电极

B.中心电极

C.进气系统

D.排气系统