在理解社会如何运转的问题上，当代社会学家最为常用的理论有（）。 ["功能论","进化论","冲突论","互动论"]
The following statements: CREATE TABLE t1 (col1 INT NOT NULL, PRIMARY KEY(col1)); CREATE TABLE t2 (col1 INT NOT NULL, col2 CHAR(1) NOT NULL, PRIMARY KEY (col1, col2), FOREIGN KEY (col1) REFERENCES t1 (col1) ON DELETE CASCADE ON UPDATE RESTRICT); CREATE TABLE t3 (col1 INT NOT NULL, col2 INT NOT NULL, PRIMARY KEY (col1, col2),FOREIGN KEY (col1) REFERENCES t1 (col1) ON DELETE NO ACTION ON UPDATE RESTRICT);INSERT INTO t1 VALUES (1), (2); INSERT INTO t2 VALUES (1, 'a'), (1, 'b'), (2,'c'); INSERT INTO t3 VALUES (1, 100), (2, 200), (2,300); How many rows will be deleted by the following DELETE statement? DELETE FROM t1 WHERE col1= 1;（） ["4","3","1","0"]
Which presents the heirarchical relationship between LVM entities?（） ["VolumeGroup>PhysicalVolume>LogicalVolume>Filesystem","PhysicalVolume>VolumeGroup>LogicalVolume>Filesystem","VolumeGroup>PhysicalVolume>Filesystem>LogicalVolume","PhysicalVolume>VolumeGroup>Filesystem>LogicalVolume"]
离子饱和度
物质费用反映的是在生产过程中所耗费的物质资料，包括（）。 ["直接物质消耗","间接物质消耗","直接人工费用","间接人工费用"]
安全控制系统在功能上分为6大功能区分别是什么
