Which of the following is one of the four major categories of door locks?
a. cylindrical
b. tumbler
c. dead bold
d. recessed
Answer: a. cylindrical
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A ________ is a huge ocean wave usually caused by a displacement of the sea floor and commonly associated with massive earthquakes.
A. tidal wave B. S-wave C. tsunami D. seiche E. breaker
Which of the following statements about desalination is true?
a. The common methods of desalination are reverse osmosis and transpiration. b. Desalination is expensive. c. The removed salt can be dumped back into the ocean with no real concerns. d. Desalination is the best approach to solving irrigation problems. e. Desalination is the best method of acquiring clear water for drinking.
Pollutant emissions from ________ have been reduced to a large extent by ________
A) manufacturing plants; catalytic converters B) manufacturing plants; using high-sulfur coal C) industry; catalytic converters D) vehicles; catalytic converters