蒸馏的蒸发量由进入（）的蒸气供应控制。
A、分离器
B、蒸发器
C、冷凝器
D、除雾器
参考答案：B
石油库铁路装卸区的消防道路宜与库内道路构成环行道，也可设有回车场的尽头式道路。（）
He accidentally ____ he had quarreled with his wife and that he had not been home for a couple of weeks. [ ]
A. let out
B. took care
C. leave out
D. made out
