在儿童青少年精神障碍患儿的护理中，护士所承担的角色，包括（） ["治疗者角色","父母角色","教师角色","朋友角色","榜样角色"]
流体的连续性方程
Which of these can not be used in defining policies？（） ["time of day","user agent","proxy port","usage quota"]
Which of the following packages maintains information in the recovery catalog？ （） ["DBMS_RCVMAN","DBMS_RMAN","DBMS_RCVCAT","DBMS_CATPROC"]
收费不适合用于（）。 ["军队","司法","基础教育","公共事业开支"]
新文学内部出现的第一场著名的论争，即“（）”的论争，论争双方是胡适与李大钊。
