What made the eastern Mediterranean and the Silk Road largely inaccessible to Europeans in the fifteenth century?
a. the failure of the Crusades to liberate the Holy Land
b. the after effects of the Great Famine and the plague
c. the dramatic rise of the Ottoman Empire
d. the collapse of the Mongol Empire
c. the dramatic rise of the Ottoman Empire
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The ____ is used to withdraw large nails and to pry when dismantling parts of a structure.
a.slotted screwdriver b.flat bar c.wrecking bar d.cat’s paw
The inner and outer surfaces of a 25-cm-thick wall in summer are at 27°C and 44°C, respectively. The outer surface of the wall exchanges heat by radiation with surrounding surfaces at 40°C and by convection with ambient air also at 40°C with a convection heat transfer coefficient of 8?W/m2•K. Solar radiation is incident on the surface at a rate of 150?W/m2. If both the emissivity and the solar absorptivity of the outer surface are 0.8, determine the effective thermal conductivity of the wall.
What will be an ideal response?
Trailer brakes may be of one of two types, _____ or _____.
A. hydraulic surge, mechanical B. mechanical, electric C. electric, rods and pulleys D. hydraulic surge, electric
The most commonly used type of brake booster uses ________ assist
A) Electrical B) Hydraulic C) Vacuum D) None of these is correct