菌落
摩擦学研究的对象很广泛,概括说研究摩擦、磨损()和润滑()的原理及其应用。
You have executed this command to change the size of the database buffer cache: SQL> ALTER SYSTEM SET DB_CACHE_SIZE=2516582; System altered. To verify the change in size, you executed this command: SQL> SHOW PARAMETER DB_CACHE_SIZE NAME TYPE VALUE ------------------- ----------- ------------------ db_cache_size big integer 4194304 (4M) Why is the value set to 4194304 and not to 2516582() because 4194304 is the granule size。 because 4194304 is the standard block size。 because 4194304 is the largest nonstandard block size defined in the database。 because 4194304 is the total size of data already available in the database buffer cache。
有关药物血浆半衰期的叙述中,正确的是() 血浆半衰期是血浆药物浓度下降一半的时间。 血浆半衰期能反映体内药量的消除度。 可依据血浆半衰期调节给药的间隔时间。 血浆半衰期长短与原血浆药物浓度有关。 一次给药后,经过4—5个半衰期已基本消除。
Which two statements are true about Oracle JRockit Mission Control (JRMC) ? () JRMC is platform neutral. It supports mosr JVMs in market。 JRMC is used for Deep visibility and analisys of single JVMs。 JRMC comes with custom in-memory agents and is supported by standard APIs (JVMT1)。 JRMC is bundled with the WebLogic Suite and WebLogic Server EE。
两台变比相同的电流互感器,当一次线圈串联,二次线圈也串联使用时,测量总的变比为()。