问题 单项选择题

慢性肺心病患者,近日来病情加重,头痛,嗜睡,动脉血气分析:PaO7.33kPa(55mmHg),PaCO8.64kPa(65mmHg),HCO20mmol/L,BE-2mol/L,pH7.34。应诊断为()

A.肺心病心力衰竭、呼酸并代碱

B.肺心病心力衰竭、呼酸代偿

C.肺心病呼吸衰竭、呼酸并代酸

D.肺心病呼吸衰竭、呼酸失代偿

E.肺心病呼吸衰竭、呼酸并呼碱

答案

参考答案:D

材料分析题

读“我国土地利用百分比表”,完成下列各题:

(1)绘制我国土地利用结构的百分比图:

(2)分析我国土地利用结构的特点:                                                                                                     

                                                                  

(3)从我国土地利用结构的特点,分析我国土地面积广大,为什么还要“珍惜和合理利用每一寸土地,

    切实保护耕地”:                                                                                                                              

                                                                                                                                                              

                                                                                                                                                              

                                                                                                                                                              

                                                                                                                                                              

单项选择题