磁带格式3592 和 LTO 哪种是开放技术的（） ["LTO","MagStar","两者都是","两者都不是"]
下列的说法（）项是错误的。 ["动火施工人员应经过安全教育","动火施工人员应具备一定的资格等级","动火施工人员应持证上岗","动火施工人员每次动火前应考试合个格"]
How does DB2 protect the integrity of indexes when data is updated?（） ["Locks are acquired on the data.","Locks are acquired on index keys.","Locks are acquired on index pages.","Locks are acquired on index pointers."]
天然气是以（）化合物为主的各种气体组成的混合气体 ["碳氧","碳氢","氮氧","硫氮"]
An administrator wants to test the performance of an application at different memory sizes. What is the most effective way to perform the test and collect statistical information for each test?（） ["Run DLPAR to change the LPAR memory for each test.","Run rmss command to simulate different memory for each test.","Run chdev command to limit the system memory size for each test.","Run chattr command to limit the system memory size for each test."]
简述农村经济管理的职能。
