200km/h地段的轨道动态不平顺的偏差,按作业验收标准轨向不能超过()。
A、3mm
B、4mm
C、5mm
D、6mm
参考答案:B
动脉血碳酸氢盐20mmol/L,pH7.6,PaC0220mmHg,提示()
A.正常酸碱平衡
B.呼吸性碱中毒
C.代谢性酸中毒
D.代谢性碱中毒
E.呼吸性酸中毒
---It’s supposed to rain tomorrow.
---I know, but the forecast ___ be wrong. Weather forecasts are far from 100 percent accurate.
A.must
B.could
C.should
D.will