按2006《沿海航行海船建造规范》,有关纵骨架式双层底船底桁材的规定之一是:在实肋板之间的中桁材两侧,应各设通达邻近纵骨的肘板,其间距一般不大于()米。
A. 0.8
B. 1.0
C. 1.1
D. 1.2
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北京、天津、上海、重庆四个直辖市公安机关制定的规范性文件,可以设定警告或者一定数量罚款的行政处罚。
A. 正确
B. 错误
The Automatic Shared Memory Management feature is enabled for the PROD database. Currently, a lot of insert activity is taking place in the database, and the memory structures are allocated according to the database workload. As the workload reduces, you decide to perform batch jobs in the database. Which of the following initialization parameters are NOT automatically resized according to the new workload and continue to remain unchanged?()
A. LOG_BUFFER
B. DB_CACHE_SIZE
C. JAVA_POOL_SIZE
D. LARGE_POOL_SIZE
E. SHARED_POOL_SIZE
F. STREAMS_POOL_SIZE
天然色素按来源、溶解性分类可分为哪些类型?并分别列举色素说明。
简述细菌细胞生长的对数期末期至形成成熟芽孢的整个过程分为六个时期。