CREATE TABLE table_18772 ("Serial & Branch" FLOAT, "Seaman" CLOB, "Mechanical" CLOB, "Secretariat" CLOB, "Supply" CLOB, "Electrical" CLOB, "Radio Electrical" CLOB, "Regulating" CLOB, "Medical" CLOB)

What are radio electricals when secretariat is wtr i?
SELECT "Radio Electrical" FROM table_18772 WHERE "Secretariat" = 'WTR I'
SELECT "Radio Electrical" FROM "table_18772" WHERE "Secretariat" = 'WTR I'