【单选题】听力原文: It was a hot afternoon in September 1963. A small party of engineers in a truck were exploring, looking for oil in the southeastern desert of Libya. They were about four hundred miles south of t...
【单选题】A ball of clay falls freely to the hard floor. It does not bounce noticeably, and it very quickly comes to rest. What, then, has happened to the energy the ball had while it was falling?
A.
It has been used up in producing the downward motion.
B.
It has been transformed back into potential energy.
C.
It has been transferred into the ball by heat.
D.
It is in the ball and floor (and walls) as energy of invisible molecular motion.
【简答题】(48~50题干共用)赵某,男,59岁。因刺激性咳嗽,咳痰,痰中带血一个月入院,胸部CT示“右肺占位性病变”,纤维支气管镜查示“右肺下叶支气管可见新生物突入管腔,呈菜花状”病理报告为“高分化鳞癌”,入院诊断“右肺中心型肺癌”于全麻下行右全肺切除术。术后最主要的护理问题是A. 气体交换障碍 B. 营养失调:低于机体需要量 C. 疼痛 D. 焦虑与恐惧 E. 肺感染