Volcanoes present a danger to aircraft ____
a. ?that can be easily avoided since the danger builds slowly
b. ?due to the effect on the humans aboard the aircraft
c. ?due to the buildup of ash on propellers
d. ?due to the effect of the ash on jet engines
e. ?due to the corrosion of wing surfaces by volcanic gasses
ANSWER: d
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The shift of world manufacturing to new industrial regions can be seen most clearly in the manufacture of:
A) steel B) prefab housing C) beverages D) canned foods E) pharmaceuticals
Which of the following does Sen claim will NOT insure food availability?
a) Dependable food imports b) Land reform c) Steady employment d) Democracy
Which of the following can be obtained using propene as a starting material?
A) glycerin B) isopropyl alcohol C) epichlorohydrin D) all of these
When two continents converge, ________
A) a volcanic arc forms on the upper plate B) the sediments trapped between them are pushed up and deformed to make a mountain range C) the lighter continent is subducted D) the heavier continent is subducted