多系统或(和)器官衰竭最常见的是()
A.胃肠、心、肺
B.脑、肺、血液
C.心、肺、肾
D.肝、肾、胃肠
E.血液、心、胃肠
参考答案:D
某主机的IP地址为202.100.1.254/22,其子网掩码是()。
A.255.255.250.0
B.255.255.252.0
C.255.255.254.0
D.255.255.255.0
The children performed a very()dance for their parents.
A.precise
B.smart
C.graceful
D.successive