病理上诊断慢性支气管炎的主要根据是( )
A．支气管壁充血、水肿
B．支气管上皮变性、坏死
C．支气管黏液腺体增生
D．支气管壁平滑肌增生
参考答案：C
The doctor said that there was _______ wrong with Jane’s legs. But she could do ______ to help her.
A．something; something
B．something, nothing
C．anything, anything
D．everything, something
什么是万有特性，说明汽油机和柴油机万有特性的区别及其对使用的指导意义。
