河漫滩二元结构
参考答案：
河漫滩沉积物和下面的河床沉积物一起构成了河漫滩二元结构。
She was caught in _______ heavy rain on her way to the lonely island, which was quite _______ experience.
A．a；/
B．/；an
C．a；an
D．a；a
在色谱分析中，实现热导检测的条件有哪些？
