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问题 单项选择题

阻塞性肺气肿出现下列哪种情况即可断为呼吸衰竭（）

A.发绀、呼吸困难

B.出现神经、精神症状

C.二氧化碳结合力升高

D.动脉血氧分压低于7.98kPa（60mmHg）

E.心慌、多汗、血压升高

答案

参考答案：D

填空题



Earthquakes often happen near volcanoes, but this is not always true. The centers of some are (1) . The bottom of the sea suddenly (2) . The powerful forces inside the (3) break the rocks. The coast is shaken and great waves appear. These waves travel (4) and rush over the land when they reach it. They are p enough to (5) houses and other buildings; sometimes they break (6) than the earthquake itself.
Very often fires followed the (7) earthquakes. In 1906, the great earthquake at San Francisco broke the gas-pipes. The gas (8) , and soon large numbers of fires were burning in the city. The water-pipes were also (9) ; so it was not possible to put the fires out. There was (10) . The Tokyo earthquake of (11) happened just before the middle of the day. People were (12) on their fires at that time. When the ground shook, the fires shook too. (13) were thrown on the different parts of the houses, some of which were (14) . Soon 134 fires were burning in the city. What kind of building (15) in an earthquake A building with concrete walls is perhaps the best. A (16) will make it even per. The frame holds the (17) together, and the walls do not easily fall. There is (18) of fire because concrete and steel do not burn. The Americans (19) the results of the earthquake in San Francisco, and they are convinced that this kind of building is the (20) .
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多项选择题

液氨泄漏的处置措施（）。

A、疏散人员，迅速撤离

B、报告消防队119

C、切断泄漏源、火源，必要时切断泄露区电源

D、马上进行堵漏
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