CREATE TABLE table_18774 ("Serial & Branch" FLOAT, "Seaman" CLOB, "Mechanical" CLOB, "Secretariat" CLOB, "Supply" CLOB, "Electrical" CLOB, "Radio Electrical" CLOB, "Regulating" CLOB, "Medical" CLOB)

What mechanical has lpm regulation?
SELECT "Mechanical" FROM table_18774 WHERE "Regulating" = 'LPM'
SELECT "Mechanical" FROM "table_18774" WHERE "Regulating" = 'LPM'