In order to collect needed information about wildlife and fisheries, the U.S. Fish and Wildlife Service works with _____
a. hunters
b. universities
c. bird banders
d. all the above
b
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La prueba que muchos inge- nieros consideran la prueba de campo más exacta para comprobar la densidad del suelo es la prueba _____.
a. del cono de arena b. de densidad nuclear c. de gravedad específica d. de dureza
The voltage measured across a single winding is known as the ____ voltage.
a. wye b. delta c. phase d. line
The subsequent problems deal with the circuit below where all voltage sources are dc and the circuit is assumed to be in steady state. Also, R1 = R2 = R3 = R4 = R.
If R3 is replaced by an open circuit and I2 is known, the current through R2 will be
A. I2 B. I2 / 2 C. 0 D. 2I2 E. ?I2
Technician A says that an oxygen sensor produces a voltage output signal based on the oxygen content of the exhaust stream. Technician B says that if the exhaust has little oxygen the voltage of the oxygen sensor will be close to 0 volts. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician