单项选择题
When replacing a part with a spare one, we should fill in tile spare parts consume table in time and make a mark in brief for （）
A.the reason of replacing B.the course of replacing C.crews who do this work D.where and when the replacing being done
单项选择题 Why the cooling water of the diesel engine should be treated? Because the（）
单项选择题 The cooling water of the diesel engine should be treated, because it has（）
单项选择题 When received the order "finished with engine" which of the following operations is wrong?（）
