企业信息系统建设中,下述( )是系统建设的基础。
A.网络
B.硬件
C.软件
D.数据
参考答案:A
Mr Zhang teaches _____ Chinese. We like _____ class very much. [ ]
A. me, her
B. me, his
C. us, his
轻度支气管哮喘发作早期的血气变化为()
A.PaO2正常、PaCO降低
B.PaO2升高
C.PaO2降低
D.PaO2降低、PaCO2升高
E.以上均不正确