立根排放系统的主要用途是排放立根，但它也能与（）系统一起进行连接工作。
参考答案：顶驱
He was asked to leave the company; ________, he was fired. [ ]
A. as a result
B. in other words
C. in a word
D. in another word
论述氢冷发电机着火现象、原因、处理方法及安全措施？
