6502电气集中,LKJ不自闭,控制台有何现象?如何处理?
参考答案:
①排列进路后,列车按钮稳光后转为调车按钮稳光;
②进路可能出现白光带;
③信号复示器瞬时开放就关闭。
为了保持吸收塔内浆液一定的密度,必须连续向吸收塔内补充工艺水。()
There has been a () lack of communication between the union and the management.
A. regretful
B. regrettable
C. regretting
D. regretted