What section of the Clean Air Act concerns work on air-conditioning systems in vehicles?
A) 847
B) 609
C) 777
D) 103a
B) 609
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Which type of wheel seal fits tight to both the hub and axle spindle and moves within itself?
A. Wiper ring B. Unitized C. Lip-type D. All of the above
Outline the overall approach to evaluating wool classes.
What will be an ideal response?
You find that the CEC of a sandy loam soil at pH 5.0 is 8 cmolc/kg and at pH 8.2 it is 14 cmolc/kg. What is the most likely reason for this difference?
A) replacement of trivalent Al3+ ions with divalent Ca2+ ions at high pH. B) increase in the pH-dependent charges on 2:1 type silicate clays C) ionization of carboxyl and phenolic groups to release H+ ions D) removal of Al atoms from tetrahedral layers at low pH. E) removal of Al3+ ions from the exchange complex at higher pH.
The fuel cap on a flex fuel vehicle may be ________ in color
A) Black with white stripes B) Red C) Green D) Yellow