Which fire detection method is NOT currently in use?
a. automated smoke detection systems mounted on tall towers
b. light aircraft with heat detection cameras
c. manned forest towers
d. weather radar
e. hot-air balloons with heat detection cameras
ANSWER: e
You might also like to view...
What is a byproduct of photosynthesis
A. Oxygen and Glucose B. Carbon Dioxide C. Water D. Oxygen
If an astronaut whose total mass is 100 kg ejects 0.1 kg of gas at a speed of 50 m/s from her propulsion pistol, her recoil speed is
A) 50 m/s. B) 5.0 m/s. C) 0.5 m/s. D) 0.05 m/s.
In cross section, the plates are part of a rigid outer shell of the Earth called the
A. lithosphere B. mantle C. asthenosphere D. crust
Judge the following sentence according to the criteria given below: The variable flow of tidal currents in two directions is an obstacle to efficient electricity generation by a tidal power plant BECAUSE electrical turbines run best when they run at
a constant velocity. A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.