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问题 单项选择题

压力-时间曲线的临床可用于（）

A.判断有无自主触发

B.评估吸气触发做功的大小

C.反馈调节呼吸机参数

D.测量PEEPi的大小

E.以上全对

答案

参考答案：E

解析：压力-时间曲线是反映气道压力随时间而变化的曲线，临床可用于：①判断有无自主触发；②评估吸气触发做功的大小；③反馈调节呼吸机参数；④测定静态呼吸力学参数；⑤测量PEEPi的大小

不定项选择

天文大潮是太阳和月亮的引潮合力的最大时期（即朔和望时）之潮，在比较太阳和月亮对潮汐影响时，假设地球绕太阳运行轨道与月球绕地球运行轨道可视为圆轨道，已知太阳质量约为月球质量的2.7×107倍，地球绕太阳运行的轨道半径约为月球绕地球运行的轨道半径的400倍。关于太阳和月球对地球上相同质量海水的引力，以下说法正确的是[ ]

A．月球引力远大于太阳引力

B．月球引力与太阳引力相差不大

C．月球引力约为太阳引力的170倍

D．月球引力约为太阳引力的1/170倍

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填空题

How did the Olympic Games start In ancient Greece athletic festivals were very important and had p ________ (1). Originally the Festival was held in honour of .Zeus, the supreme god in Greek Mythology. Eventually the Olympian athletic festival had lost its ________ (2) and became an international event. No one knows exactly ________ (3) the Olympic Games go, but some scholars recorded date from 776 B.C.According to some scholars, at first the only Olympic event was ________ (4), called a stadium and that was the only event until 724 B.C. After that, other ________ (5) were added and sixteen years later in ________ (6) the pentathlon was added and wrestling became part of the games. This pentathlon was a five-event match which ________ (7) running, wrestling, leaping, throwing the discus, and hurling the javelin.The games were held ________ (8) and after an uninterrupted history of 1170 years, the games ________ (9) in A.D. 394, the Christian era, because of their pagan origin.It was over ________ (10) before there was another such international athletics gathering. In 1896, the first of the modern ________ (11) opened in Athens, Greece.Nowadays, the Games are held in different countries ________ (12). The host country provides vast facilities such as stadiums and ________ (13).Many more sports are represented, including the very celebrated event: ________ (14).The Olympics start with the arrival in the stadium of a torch, ________ (15) on Mount Olympus by the sun’s rays. The torch is carried by ________ (16) to the stadium. The Olympic flame symbolizes the ________ (17) of the ancient Greek athletic ideals, and it burns throughout the Games until ________ (18). The well-known Olympic flag, however, is ________ (19): the five interlocking rings symbolize the uniting of all five continents ________ (20).
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