婴幼儿时期眼睑皮肤肿块呈鲜红色或暗红色斑块，扁平隆起，应为（） A.皮样囊肿 B.海

TCP/IP模型由（）、网络层、（）、应用层四层组成

宜首选氢化可的松治疗的病症是

A．哮喘持续状态

B．心源性哮喘

C．肺心病性呼吸困难

D．青霉素过敏引起的呼吸困难

E．中度支气管哮喘发作

Although he is considered a great writer, __________. [ ]

A. his works are not widely read    

B. but his woks are not widely read

C. however, his works are not widely read  

D. still his works are widely read

外科患者血小板数量多少时可以不输血小板（）

A.>150×10⁹g/L

B.>100×10⁹g/L

C.>70×10⁹g/L

D.>80×10⁹g/L

E.>50×10⁹g/L

档案检索工具有（）。

A．移交目录

B．卡片目录

C．分类目录

D．归档文件目录