一般情况下,要保留气管导管超过多长时间时,可考虑采用鼻插管()
A.12h
B.24h
C.36h
D.48h
E.72h
参考答案:B
下列图示的实验操作中,正确的是( )
A.
量9.5mL液体
B.
干燥氧气
C.
测定溶液的pH
D.
称量NaCl
—___________?
—She is a nurse in a hospital. [ ]
A. How is your mother
B. What does your mother do
C. What is your mother doing
D. Who is your mother