The standard welding symbol consists of ____.
A. a reference line
B. an arrow and a reference line
C. a reference line, an arrow, and a tail
D. an arrow
Answer: B
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A(n) ____________________ is a swelling filled with pus as a result of a bacterial infection
Fill in the blank(s) with the appropriate word(s).
A sling psychrometer ____.
A. measures the dry-bulb and wet-bulb temperatures of air B. measures the air velocity through a duct C. uses a microprocessor to provide information for proper air balance D. measures the quantity of air, in cfm, flowing through a duct
Hot water heating coils should be piped:
A) With PVC pipe to take advantage of PVC's natural insulating ability. B) For parallel flow so that the warmest water meets the coldest air. C) With iron pipe for durability and strength. D) For counter flow so that the warmest water meets the warmest air.
It is very important NOT to shut the engine off or stall the engine when the transmission
A. is in gear B. is idling C. is in neutral D. has just been shifted