In the pre-ignition operation of the reheating furnace, blow ( ) into the furnace to purge the combustible gas in the furnace.

There is a ( ) on the heating furnace gas line to prevent the tempering explosion.

Apply ( ) purge replacement to system gas lines before ignition of heating furnace.

What is wrong with the following statement about the purpose of blowing gas lines before ignition is ( ).

Purge gas lines before ignition for purpose to prevent ( ).

In the heating furnace operation, the fuel oil should be ( ) before ignition.

The cycle of heating furnace fuel oil before ignition is not for ( ).

The cycle before ignition of the heating furnace fuel oil is not to test the fuel oil system ( ).

The cycle before ignition of the heating furnace fuel oil is to remove ( ) from the fuel oil.

The following requirements for heating the stove nozzle adjustment are correct ( ).

The following requirements for heating the stove nozzle adjustment are wrong ( ).

One of the following options that is not the cause of heating the burner coking is ( ).

The following requirements for heating the stove nozzle adjustment are correct ( ).

The best of the following options as a neutralizer is ( ).

What is wrong with the following statement regarding the purpose of injecting neutralizer in the volatile line at the top of the tower is ( ).