Most post-2010 diesel engines require what type of fluid for emissions control?
A. Exhaust aftertreatment fluid (EAF).
B. Diesel particulate fluid (DPF).
C. CARB emissions fluid.
D. Diesel exhaust fluid (DEF).
Answer: D
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One of the most precious of all our natural resources is _____
A) grain crops B) sunlight C) wind D) water
When sizing a cooling tower, the tower is sized to handle the cooling load of the conditioned area plus about ____% for heat of compression.
A. 0 B. 15 C. 25 D. 35
Current flow through a diode is normally caused by ________
A) forward voltage across the diode B) a reverse voltage across the diode C) thermally produced electron-hole pairs D) depletion layer breakdown
In the circuit shown below, let R1 = 3 ?, R2 = 1 ?, R3 = 2 ?, C = 0.1 F, L = 1 H, v(0-) = 2 V, i(0-) = 2 A, vs(t) = 2 u(t) Draw the circuit in the s-domain and find V(s) and v(t) for t ? 0.
