管理职能偏重于运筹，领导职能偏重于实践。
Examine the code： CREATE ROLE readonly IDENTIFIES USING app.chk_readwrite ； CREATE ROLE readwrite IDENTIFIED USING app.chk_readwrite ； CREATE OR REPLACE PROCEDURE app.chk_readwrite AUTHID CURRENT_USER IS ipchk STRING（30）； BEGIN IF sys_context（‘USERENV’，’ISDBA’）=’TRUE’ THEN DBMS_SESSION.SET_ROLE‘READWRITE’） ； ELSE DBMS_SESSION.SET_ROLE（‘READONLY’） ； END； / Which three statements correctly describe the Secure Application role definition？（） ["No user or application has to remember or hide a password. ","It prevents everyone except a true DBA session from acquiring the READWRITE role. ","app.chk_readwrite is called whenever a user tries to access rows protected by the READONLY or READWRITE label. ","app.chk_readwrite is called by users or applications when they want to enable the READONLY or READWRITE role."]
为患者梳头时，遇头发打结不易梳理，可用何种溶液湿润后再梳理：（） ["30％乙醇","生理盐水","70％乙醇","油剂","自来水"]
影响财政收入规模下限指标的因素，一类是刚性的，下列中属于刚性因素的有（）。 ["国防费支出","公共基础设施建设支出","行政管理费支出","警察部队支出","教育费支出"]
一般护理记录单需连续记录三天新入院患者的病情变化。
我们学习语言主要是学习它的（）和（）。
