能够防止氧化热解,提高挥发油品质而且提取效率高的方法是()
A.压榨法
B.溶剂提取法
C.水蒸气蒸馏法
D.CO2超临界流体提取法
E.盐析法
参考答案:D
He had a burning _______ to win back the teacher's confidence in him. [ ]
A. desire
B. feeling
C. emotion
D. impression
毫米、厘米、分米间的进率是[ ]
A.10
B.100
C.1000