Which three of the following are consirered Fixed Asset Deprecation Rule Components ？（） International Deprecation Methods。 Header。 Annual Rules。 Rule Conventions。 Predefined Deprecation Method。
男性，36岁，体重50kg，不慎被火焰烧伤，急诊入院。查体：面部、颈部及双上肢烧伤，腹部有3个手掌面积烧伤，创面可见小水疱、其疱壁较厚，去除疱壁后，基底部呈红白相间，疼痛迟钝。该患者烧伤面积是（） 30%。 25%。 35%。 27%。 33%。
You are managing an Oracle Database 10g database that uses Oracle Managed Files （OMF）. You enabled the block change tracking feature for the database. Which statement regarding the change tracking file is true？（） One block change tracking file is created for each data file. By default， the file is created in DB_CREATE_FILE_DEST.。 One block change tracking file is created for each data file. By default， the file is created in BACKGROUND_DUMP_DEST.。 One block change tracking file is created for the database. By default， the file is created in DB_CREATE_FILE_DEST.。 One block change tracking file is created for the database. By default， the file is created in BACKGROUND_DUMP_DEST.。
An index called ORD_CUSTNAME_IX has been created on the CUSTNAME column in the ORDERS table using the following command： SQL>CREATE INDEX ord_custname_ix ON orders（custname）； The ORDERS table is frequently queried using the CUSTNAME column in the WHERE clause. You want to check the impact on the performance of the queries if the index is not available. You do not want the index to be dropped or rebuilt to perform this test. Which is the most efficient method of performing this task？（） disabling the index。 making the index invisible。 making the index unusable。 using the MONITORING USAGE clause for the index。
影响再结晶温度的因素是
当线圈的匝数，电压不变时，电源频率增高，铁芯中磁通会（）。
