计算题:已知现用250Ys─60型泵输送油品,若知其轴功率为130千瓦,有效功率为110千瓦,则其效率为多少?
患者男,55岁,嗜烟如命,长期咳嗽。常感胸闷,气促,“桶状胸”。除了肺部疾病外,感觉右下肢发凉、麻木、疼痛,曾用去痛片→哌替啶→吗啡等镇痛,疼痛从右趾尖开始,组织也从此处慢慢变黑。入院后医师用扩张血管、镇痛药等治疗,并力劝患者戒烟,最后因治疗无效而截去右足。患者右足的病变是()。
A. 恶性黑色素肿瘤
B. 气性坏疽
C. 湿性坏疽
D. 干性坏疽
E. 急性化脓性感染
F. 干酪样坏死
G. 凝固性坏死
Fuel injection equipment must be kept in good condition, timed correctly, and the ()in each cylinder must also be carefully balanced so that individual cylinders are not overloaded.
A. MIP
B. MCR
C. MEP
D. BHP