This picture is of a(n) __________ steam trap. [图...
This picture is of a(n) __________ steam trap.
A、inverted bucket
B、thermodynamic
C、float and thermostatic
D、impulse
This picture is of a(n) __________ steam trap.
A、inverted bucket
B、thermodynamic
C、float and thermostatic
D、impulse
This valve is .
A、butterfly valve
B、globe valve
C、gate valve
D、plug valve
This pipe fitting is .
A、a female adapter
B、a male adapter
C、a bushing
D、a coupling
This valve is .
A、ball valve
B、butterfly valve
C、gate valve
D、plug valve
This valve is .
A、butterfly valve
B、gate valve
C、globe valve
D、check valve
The purpose of this device is to .
A、remove condensate from a steam piping system
B、automatically reduce liquid pressure in a pipline
C、relieve excess pressure from a boiler or pressure vessel
D、protect drinking water from contamination
The purpose of this device is to .
A、remove condensate from a steam piping system
B、automatically reduce liquid pressure in a pipline
C、relieve excess pressure from a boiler or pressure vessel
D、protect drinking water from contamination
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