处理完氮气精制泄漏后，应该通入大量的（）置换，确保室内空气新鲜。
参考答案：风
______words and expressions have come into the English language from American English.[ ]
A. A large amount of
B. Masses of
C. A great deal of
D. Many a
辨别病势趋向的一种辨证方法是
A．气血辨证B．阴阳辨证C．表里辨证D．虚实辨证E．寒热辨证
