When biodiesel is used to fuel commercial vehicles which US federal standard must the fuel comply with?
A. J1939
B. J1667
C. ASTM 975
D. ASTM 6751
Answer: D
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Using these three formulas : V = IR, R = (?L)/A , A = ?(0.5d)^2, find the difference in current (I) that a copper wire (? = 1.72 × 10?8 ?^-8 · m) can carry over an aluminum wire (? = 2.75 × 10?8 ?^-8 · m) with equal diameters (d) of 0.5 cm and a length (L) of 10 000 m carrying 110 V (volts).
What will be an ideal response?
Which of the following is the traditional primary plowing tool?
a. Lister plow b. Moldboard plow c. Chisel plow d. Finishing harrow
The monetary inflation needed to relieve the social and economic hardships of the late 19th century eventually came as a result of
A. the repeal of the Gold Standard Act. B. McKinley's adoption of the bimetallic standard. C. an increase in the international gold supply. D. the United States going off the gold standard. E. the creation of the Federal Reserve System.
The epiglottis prevents food and water from entering the respiratory system
Indicate whether the statement is true or false