我国下列天文成就,产生于先秦时期的有()。①最早记录太阳黑子②最早记录哈雷慧星③最早的天文学著作 ①②③。 ②③。 ①③。 ①②。
An application accesses a small lookup table frequently. You notice that the required data blocks are getting aged out of the default buffer cache. How would you guarantee that the blocks for the table never age out?() Configure the KEEP buffer pool and alter the table with the corresponding storage clause.。 Increase the database buffer cache size.。 Configure the RECYCLE buffer pool and alter the table with the corresponding storage clause.。 Configure Automata Shared Memory Management.。 Configure Automatic Memory Management。
明确规定了游戏任务、玩法、规则、结果这四个基本因素的游戏,是下列哪一类游戏?() 角色游戏。 结构游戏。 创造性游戏。 有规则游戏。
测定变压器绕组绝缘电阻用()。 2500V摇表。 双臂电桥。 单臂电桥。
When scaling Coherence from one to two cache servers, it will not show the same scalability as two to four. Why?() Coherence uses a more efficient TCMP algorithm going from two to four cache servers。 When going from one to two cache servers, object backups are copied across servers so work is doubled,but going from two to four is a fixed amount of work。 Near cache is enabled with a larger quorum thus performance is improved。 all of the above。
等电位连接:将不同的电气装置、导电物体等,用接地导体或浪涌保护器以某种方式连接起来,以减少雷电流在它们之间产生的()