蒸发量大于()T/H的锅炉给水必须除氧。
A、6
B、4
C、2
D、1
参考答案:C
代谢性碱中毒()
A.HCO3-↓,pH↑,PaCO2↓
B.HCO3-正常,pH↓,PaCO2↓
C.HCO3-正常或↑,pH↓,PaCO2↓
D.HCO3-↑,pH↑,PaCO2正常或↑
E.HCO3-↓,pH↓,PaCO2正常或↓
Going to school _____ breakfast is bad _____ your health.[ ]
A. with; for
B. without; for
C. with; at
D. without; at