实验室生物安全等级分四级,()级生物安全防护要求最高
A. 一级(BSL-1)
B. 二级(BSL-2)
C. 三级(BSL-3)
D. 四级(BSL-4)
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对患严重危害人畜健康的传染病的动物,有时还包括同群动物进行强行宰杀的动物防疫行政措施叫()。
(新)买卖合同中标的物交付之后产生的孳息物,归()。
A. 买受人所有
B. 出卖人所有
C. 买受人和出卖人共有
D. 属于无主财产
()即社会主义全民所有制经济,是国民经济中的主导力量。
A. 国营经济
B. 国有经济
C. 集体经济
D. 股份制经济
Which two statements are true when row archival management is enabled?()
A. The ORA_ARCHIVE_STATE column visibility is controlled by the ROW ARCHIVAL VISIBILITY session parameter.
B. The ORA_ARCHIVE_STATE column is updated manually or by a program that could reference activity tracking columns, to indicate that a row is no longer considered active.
C. The ROW ARCHIVAL VISIBILITY session parameter defaults to active rows only.
D. The ORA_ARCHIVE_STATE column is visible if referenced in the select list of a query.
E. The ORA_ARCHIVE_STATE column is updated automatically by the Oracle Server based on activity tracking columns, to Indicate that a row is no longer considered active.