Which of the following has not been an effect of the intensified agriculture of the past 40 years?
A) reduced need to cultivate fragile lands to produce the food required by the world
B) imbalanced human nutrition due to decreased production of edible legume crops
C) increased use of chemical pesticides
D) increased micronutrient levels in the soil
E) decreased biological diversity in soil systems
D
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Answer the following statement(s) true (T) or false (F)
Joists lapped on top of a girder must be cut to length.
When using a portable generator to fast charge a set of discharged batteries on a truck, which of the following would be best practice to get the unit started?
A. disconnect the engine ECM before cranking B. turn on all of the chassis lights before connecting the generator C. make sure all electrical accessories are turned off D. turn on just the headlights before connecting the generator
Technician A says the manufacturer uses crush zones to help manage the collision energy. Technician B says if vehicle-specific repair procedures are not available, one should use the general sectioning guidelines provided by Tech-Cor and I-CAR. Who is correct?
A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B
As long as the voltage applied to the gate of the SCR is locked in phase with the voltage applied to the anode, the SCR cannot be fired after the AC voltage applied to the anode has reached ____°.
a. 15 b. 45 c. 90 d. 180