班级教学的基本形式有行政班、（）、（）、（）。
A customer recently purchased a new x3550 M3 server and one of the hard drives has failed. The customer has a standard warranty. They called you asking for a replacement. Which action should the customer take？（） Contact the IBM FTSS to replace the drive。 Contact the IBM CSR or SSR to replace the drive。 Order a replacement drive。 Contact IBM Service。
120阀全部采用了橡胶膜板，取消了金属滑阀结构。
通过论证认为：学科教学知识（）最能区分高成效教师与低成效教师间的不同。
Observe the following warning in an RMAN session of your database instance: WARNING: new failures were found since last LIST FAILURE command Which statement describes the scenario that must have produced this warning?（） The CHANGE FAILURE command has detected new failures recorded in the Automatic Diagnostic Repository(ADR)。 The VALIDATE DATABASE command has detected new failures recorded in the Automatic Diagnostic Repository (ADR)。 The ADVISE FAILURE command has detected new failures recorded in the Automatic Diagnostic Repository (ADR) since the last LIST FAILURE。 The RECOVER command has detected new failures recorded in the Automatic Diagnostic Repository (ADR) since the last LIST FAILURE command was executed。
世界上通常用于衡量人口文化素质的指标是（）
