[单选题]患者女,24 岁。因一氧化碳中毒 12 小时后入院。查体:深昏迷, 面色苍白, 四肢湿冷,尿少,碳 氧血红蛋白 55%,诊断为急性一 氧化碳中毒。为促进一氧化碳的 排 出 , 最 佳 的 措 施 是 ( )
A. 应用呼吸机
B. 高压氧舱治疗
C. 间断高浓度给氧
D. 持续低流量给氧
E. 应用呼吸兴奋剂

{{B}}Questions 47 to 51 are based on the following passage.{{/B}}
Motorways are no doubt the safest roads in the country. Mile for mile, vehicle for vehicle you are much less likely to be killed or seriously injured than on an ordinary, road. On the other hand, motorways have a far better accident record than any other part of our national road system because of the speed and volume of traffic. If you do have a serious accident on a motorway, fatalities are much more likely to occur than in a comparable accident elsewhere on the roads. It is reported that motorway accidents account for some 10% of all injuries out side urban areas.
Motorways have no sharp, bends, no roundabouts or traffic lights and thus speeds are much greater than on other roads. Though the 70 m.p.h, limit is still in force, it is often treated with the contempt that most drivers have for the 30 m.p.h, limit applied in built-up areas in Britain. A