Blue smoke emission from a truck diesel engine is usually caused by:
A. an oil leak
B. semi-combusted oil in the exhaust gas
C. over-fueling
D. air starvation
Answer: B
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Answer the following statement(s) true (T) or false (F)
1. Ladder logic is a good choice for a programming language because it closely resembles the way circuits are hard-wired. 2. The EXAMINE OFF instruction is only logically true when the device referenced is ON, or open. 3. When the N.C. symbol is programmed in a ladder diagram, any address that is actually ON becomes logically true and power can flow. 4. The number of times an input device can be addressed and used in a programmed circuit is limited to eight. 5. There are many more applications and circuits that normally require two- or three-pole devices that now only require single-pole devices when programmed for a PLC.
The Colombian horned frog is primarily what color?
A) brown B) red C) green D) yellow
Oxygen, carbon, and ____ are gases exchanged in soil
a. helium b. lithium c. nitrogen d. calcium
Which of the following could cause this condition?
A reach-in with cap tube has the following conditions: ? Subcooling is 6° ? Superheat is 0° a. Dirty condenser b. Restricted cap tube c. Overcharge d. Undercharge