碱发原料的物理、化学变化分为:(1)表面膜的破坏;(2)吸水膨胀;(3)()。
A、漂洗后备用
B、漂洗后膨胀停止
C、漂洗后不再膨胀
D、漂洗后继续膨胀
参考答案:D
属于重度低氧血症的指标是()
A.PaO2<80mmHg,SaO2<80%
B.PaO2<80mmHg,SaO2<60%
C.PaO2<60mmHg,SaO2<80%
D.PaO2<30mmHg,SaO2<60%
E.PaO2<50mmHg,SaO2<50%
--Do you think _____ a concert in our school hall this weekend?
--Yes, there will.[ ]
A. there will have
B. there will be
C. will there be
D. will there have