The three types of gas space heaters are:
A) Category I, category II, and category III.
B) Natural gas, propane, and kerosene.
C) Vented, unvented, and catalytic.
D) Low pressure, medium pressure, and high pressure.
C
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La herramienta que se muestra en la figura provista se utiliza para:
a. roscar tubos.
b. doblar tubos.
c. soldar uniones de tubos.
d. biselar tubos.
What does the beep indicate on some ohmmeters?
What will be an ideal response?
Most zone dampers in zoning systems _____
a. are powered open and spring-return closed b. are powered closed and spring-returned open c. have four distinct positions d. must serve more than one diffuser
If the fifth-wheel locking pins appear to be stuck, the driver can usually free them by
A. gently rocking the tractor B. carefully moving the fifth wheel forward C. knocking the kingpin into position D. pressing and releasing the air brakes