Instruction: “Disconnect power before removing the cover.” What is the safe sequence?
กDisconnect power first, then remove the cover.
ขRemove the cover first, then disconnect the power.
คReconnect the power before removing the cover.
งRemove the cover while leaving the power connected.
เฉลยอธิบาย
“Before” explicitly establishes the required order. The other options each alter or violate a specific part of that meaning or rule. The other options each alter or violate a specific part of that meaning or rule.