机电传动系统稳定工作时中如果TM>TL，电动机旋转方向与TM相同，转速将产生的变化是（）。 减速。 加速。 匀速。 停止。
The DB_BLOCK_CHECKINGinitialization parameter is set to TRUE. What would be the result of this setting on the data blocks being written to the datafiles， every time the DBWn writes？（） The Oracle database will check all data blocks by going through the data on each block， making sure the data is self-consistent.。 The DBWn and the direct loader will calculate a checksum and store it in the cache header of every data block when writing it to disk.。 The Oracle database will check data blocks belonging to the SYSTEM tablespace only， by going through the data on each block， making sure the data is self-consistent.。 The Oracle database will check data blocks belonging to the SYSAUX tablespace only， by going through the data on each block， making sure the data is self-consistent.。 The Oracle database will check data blocks in the SYSTEM and SYSAUX tablespaces only， by going through the data on each block， making sure the data is self-consistent.。
接地体与埋地交流电缆、光缆、传输电缆交越或并行时，接地体与电缆之间的距离应不小于（）mm；与高压埋地电缆交越时，接地体与高压电缆之间宜满足500mm的最小距离，并行时宜满足1000mm的最小距离。 100。 150。 250。 200。
论述离心式压缩机的转子如何检修。
塞柄结合器主要用于（） 连接刀具。 连接塞柄。 平衡压力。 全部包括。
男性，45岁，施工中因房屋倒塌，被埋在泥土中，伤肢严重肿胀，组织广泛缺血与坏死。此时的损伤多为（）
