Which phrase describes a technique of environmental biotechnology? A.
creating plant varieties that can resist pests
B.
using bacteria to treat chemical wastes
C.
using enzymes to process and finish fibers
D.
creating a breed of animal that is easy to tame

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.