工应当参加工伤保险，由用人单位缴纳工伤保险费，职工不缴纳工伤保险费。
Examine the following command that is used to duplicate a database on the same host： RMAN> RUN { ALLOCATE AUXILIARY CHANNEL， aux 1 DEVICE TYPE DISK； DUPLICATE TARGET DATABASE TO auxdb SKIP READONLY； \ } Which two statements describe the effect after the database is duplicated successfully？（） The data files of the read-only tablespaces in the target database are not duplicated。 The read-only tablespaces in the target database are still defined in new the database。 The read-only tablespaces in the target database are changed to online after duplication。 The data files of the read-only tablespaces in the target database get duplicated。 The read-only tablespaces in the target database are not defined in the new database。
所谓单调作业是指那些千篇一律、简单、快速、高度重复、跟着设备机械地运动、无精神活动余地的工作。（）
Given： What is the result when the programmer attempts to compile the code and run it with the command java Converter 12？（） It is true that j==i.。 It is false that j==i.。 An exception is thrown at runtime.。 Compilation fails because of an error in line 13.。
在粘性土的土坡稳定分析中，对于非均质土坡或较复杂土坡的适用方法是（） 摩擦圆法。 泰勒分析法。 条分法。 分层总和法。
防蜡剂的代号是（）
