全麻时吸入气中最低氧浓度为()
A．21%
B．28%
C．33%
D．40%
E．45%
参考答案：C
用括号内所给词的适当形式填空。
1. Did you expect _____ (see) your father?
2. You can see the picture on the wall over _____ (people) heads.
3. Is it the band which gets everyone _____ (dance)?
4. His grandmother is famous as a _____(photograph).
5. Those drums are really _____ (loud).
不能反映肝内或肝外胆汁淤积的指标是（）
A.血清γ-谷氨酰转移酶
B.血清碱性磷酸酶及其同工酶
C.血清总胆红素测定
D.血清1分钟胆红素测定
E.血清5′-核苷酸酶
e picture on the wall over _____ (people) heads.
e drums are really _____ (loud).