A.肺功能基本正常
B.肺功能轻度减退
C.肺功能显著减退
D.肺功能严重减退
E.呼吸衰竭
[单选题]A.1,3B.1,2C.-1,3D.-1,2E.-1,-3
[单选题]A.1,3B.1,2C.-1,3D.-1,2E.-1,-3
[单选题]A.递增且为凹弧B.递增且为凸弧C.递减且为凹弧D.递减且为凸弧
[单选题]A.递增且为凹弧B.递增且为凸弧C.递减且为凹弧D.递减且为凸弧
[单选题]A.递增且为凹弧B.递增且为凸弧C.递减且为凹弧D.递减且为凸弧
[单选题]A.递增且为凹弧B.递增且为凸弧C.递减且为凹弧D.递减且为凸弧
[单选题]A.1A,50Hz,30°B.1A,100Hz,-30°C.0.707A,100Hz,30°D.0.707A,50Hz,30°
[单选题]A.三相熔断器B.二相熔断器C.已熔断的一相熔断器D.已熔断的一相熔断器和相邻的一相熔断器
[单选题]A.15Ω,240V,80VB.60Ω,240V,160VC.15Ω,480V,160VD.60Ω,480V,80V