What is the essential difference between an A-Train and a C-Train?
A. C-Train is longer
B. A-Train is longer
C. C-Train has a rigid double-drawbar system
D. A-Train has more pivot points
Answer: C
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Find the length of valley jack rafter E in the accompanying figure.
A. 48 7/16" B. 48 9/16" C. 48 11/16" D. 48 13/16"
Service entrance cables must be supported by straps or staples within __________ inches of any electrical enclosure or weatherhead and at intervals not exceeding __________ inches.
a. 8, 24 b. 12, 24 c. 8, 30 d. 12, 30
What material should clothes worn during welding be made of?
A) A polyester, nylon, acetate blend B) 100% Cotton C) 65% polyester - 35% nylon D) 100% polyester
Which type of space heater is generally the most expensive to operate?
A) Electric space heater B) Kerosene space heater C) Vented gas space heater D) Unvented gas space heater