The _____________________ method of biological detection uses plants, animals, and microbes to warn us about pollutants in the environment
Fill in the blank(s) with correct word
indicator species
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This figure shows that ____ arrangement of fibers provides the highest strength.
?
A. ?pseudo-isotropic B. ?bidirectional C. ?random D. ?anisotropic
The cutting operation that cuts wood with the grain is called __________.
Fill in the blank(s) with the appropriate word(s).
Match the following:
1. Project pulsed infrared from a transmitter to receiver 2. Operates at a very high frequency 3. Detect the sound of breaking glass 4. Sense a change in heat 5. Sound waves bounce off the object and back to the sensor’s receiver 6. Must be a direct path from transmitter to receiver 7. Continually emits an infrared light by infrared light-emitting diode 8. Glass break sensor 9. Combine more than one technology in one enclosure 10. Allow security guards to monitor areas where they do not have to be present A. Passive Infrared B. Active Infrared C. Ultrasonic D. Microwave/Radar E. Vibration F. Dual-Technology Motion G. Acoustic H. Photoelectric Beam I. Video Motion Detection
Which type of port fuel-injection system uses a fuel temperature and/or fuel-pressure sensor?
A) TBI units only B) Demand delivery systems C) Electronic returnless systems D) All port fuel-injected engines