试述转8A转向架(滚动轴承)重力传递顺序?
参考答案:
车体→上心盘→下心盘→摇枕→楔块→枕弹簧→侧架→轴箱→车轴→车轮→钢轨。
根据汉语提示或首字母提示完成句子(共6小题,每小题1分,满分6分)
小题1:It’s one of the most famous____________(教堂) in his town.
小题2:she is as _________(活泼的)as a child.
小题3:W_________you do,you must try your best.
小题4:Eating too much burnt food can _______________(增加)the risk of cancer.
小题5:Why not _____________(考虑)visiting HongKong for your next vacation?
小题6:That company __________(提供)us with 3,000 dollars in 2012.
女性,44岁,活动后心悸、气短、夜间阵发性呼吸困难、纳差、上腹饱胀、少尿、下肢水肿2个月余。体检示颈静脉怒张,双肺底闻细小湿啰音,心脏向两侧扩大,心率100次/分,律整,心尖部闻第三心音奔马律,可闻Ⅱ级收缩期杂音,肝大,肝颈静脉回流征(+),双下肢水肿(++),超声示左右心室扩大,弥漫性运动减弱,二尖瓣中度反流。最可能的诊断是()
A.风湿性心脏病,二尖瓣关闭不全,全心衰竭
B.扩张型心肌病,全心衰竭
C.渗出性心包炎
D.风湿性心脏病,主动脉瓣关闭不全,全心衰竭
E.缩窄性心包炎