[单选题]A.代谢性碱中毒B.呼吸性碱中毒合并代谢性酸中毒C.失代偿性呼吸性酸中毒D.失代偿性代谢性酸中毒E.呼吸性碱中毒

[单选题]A.B.C.P（AB）=P（A）P（B）D.P（AB）≠P（A）P（B）E.A、B、C、D都不正确

[单选题]A.B.C.P（AB）=P（A）P（B）D.P（AB）≠P（A）P（B）E.A、B、C、D都不正确

[单选题]A.0.1～0.19㎡B.0.2～0.29㎡C.0.3～0.39㎡D.0.4～0.59㎡

[单选题]A.550～570ppmB.0.5～0.6ppmC.800～900ppmD.440～460ppm

[单选题]A.0.1～0.19㎡B.0.2～0.29㎡C.0.3～0.39㎡D.0.4～0.59㎡

[单选题]A.550～570ppmB.0.5～0.6ppmC.800～900ppmD.440～460ppm

[单选题]A.200%B.300%C.400%D.500%

[单选题]A.200%B.300%C.400%D.500%

[单选题]A.有早接触B.就位道不一致C.邻接点过紧D.出现电位差刺激E.邻牙有根尖病变