A. 负性肌力 B. 升高血压 C. 抗心肌缺血 D. 致心律失常 E. 收缩血管
A. No, I still have a few. B. No, I still have a little. C. Yes, I have some. D. Yes, I have many.
A. 台后填土回填压实度达到要求 B. 减少台前预压长度 C. 采用一般填料做桥头填料
A. 机油过多 B. 失控 C. 操作不当