题目内容

功率因数cosφ是表示电气设备的容量发挥能力的一个系数,其大小为()。

A. P/Q;
B. P/S;
C. P/X;
D. X/Z。

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2岁女孩,因生长发育落后,智力发育落后来诊。此患儿出生后即有吃奶差,腹胀、便秘,少哭、少动;哭声嘶哑,近2~3个月出现面部、眼睑水肿。至今不会说话、不会走路。体检:体温35.7℃,心率66次/分,呼吸22次/分,皮肤粗糙,毛发干燥,表情呆滞,声音嘶哑,眼距宽,鼻梁低平,舌伸出口外,面部眼睑水肿,双肺听诊无哕音,心音低钝,腹膨隆,有脐疝,四肢肌张力弱。以下哪项检查可以确诊()

A. 染色体检查
B. 血苯丙氨酸浓度
C. GH刺激试验
D. 血清T3、T4、TSH浓度
E. 骨龄X线片

10kV铁横担线路,当档距为120m以下时,直线杆横担应安装在距杆顶()处。

The database is running in ARCHIVELOG mode and the FORMAT option is not configured in RMAN for disk backups. You configured the flash recovery area location and size by using the DB_RECOVERY_FILE_DEST and DB_RECOVERY_FILE_DEST_SIZE initialization parameters. Which statement is correct in this scenario?()

A. If the FORMAT option to the RMAN BACKUP command is specified, then RMAN creates backup pieces and image copies in the flash recovery area with names in the Oracle Managed Files (OMF) format.
B. If any local destinations for LOG_ARCHIVE_DEST_n are set, then archived redo logs are stored in these destinations as well as in the flash recovery area.
C. If the flash recovery area location is configured using the DB_RECOVERY_FILE_DEST initialization parameter, then the RMAN backup of Oracle managed datafiles (OMF) only will go to the flash recovery area by default.
D. If no other destination is configured for recovery files, then RMAN places the control file autobackups in the flash recovery area by default.

《建筑消防设施的维护管理》规定,建筑消防设施档案中消防设施的基本情况不包含下列哪些文件或资料?()

A. 建筑消防设施的验收文件
B. 调试记录
C. 建筑消防设施系统图
D. 检测记录

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