The steam use process should be ( ).

When stopping to sweep lines, each low blow-out can only act as ( ).

Steam should be ( ) before use.

Introduce steam when used should ( ).

The following are not units for steam through pressure test purposes ( ).

The following are not units for steam through pressure test purposes ( ).

The following is the purpose of the steam through pressure test ( ).

Before the unit is driven into the oil, the ( ) process should be implemented in advance, and the steam is blown through.

What is wrong with the following statement about the rational use of steam for stage pressure testing is ( ).

The purpose of pressure test for pipelines and equipment is ( ).

When the unit is startup, the following statement about the purpose of the segmented pressure test is wrong ( ).

When the unit is in operation, the staged pressure test allows the initial inspection of the ( ) of the equipment.

The following is not for the purpose of the pre-commissioning vacuum tower test ( ).

The purpose of vacuuming test of decompression tower before commencement is ( ).

The vacuum system condenser drain pipe of the decompression tower should be at least ( ) cm high.