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对于在常温下难以破碎的固体废物，如（），（）等可利用其低温变脆的性能进行破碎.

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输配电压等级序列协调规划技术成为指导和规范智能配电网规划的重要支撑技术之一。

A. 正确
B. 错误

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技术改造是企业通过对生产技术在原有基础上的局部改进和创新。

A. 正确
B. 错误

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某建设工程施工合同约定：工程无预付款，进度款按月结算，保留金按进度款的3%逐月扣留，监理工程师每月签发付款凭证的最低限额为25万元。经计量确认，施工单位第一个月完成工程款25万元，第二个月完成工程款30万元，则第二个月监理工程师应签发的付款金额为（）万元。

A. 24.25
B. 29.1
C. 53.25
D. 55

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What is the impact of the results of the output of the following command？（） RMAN> report unrecoverable database； Report of files that need backup due to unrecoverable operations File Type of Backup Required Name 4 full or incremental C：\ORACLE\ORADATA\ORCL\USERS01.DBF

A. There are no backup sets with any backups of the users01.dbf datafile.
B. The users01.dbf datafile has had unrecoverable operations occur in it. It will need to be backed up or some data loss is possible during a recovery.
C. The users01.dbf datafile is corrupted.
D. The users01.dbf datafile backup exceeds the retention criteria.
E. The last backup of the users01.dbf datafile failed and must be rerun.

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