Which nation facilitated V. I. Lenin’s return to Russia from Swiss exile during the revolutionary crisis of 1917?
a. Austria-Hungary
b. Germany
c. Bulgaria
d. Great Britain
b. Germany
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____ cast iron is the most widely used type of cast iron. It is easily welded but because it is somewhat porous it can absorb oils into the surface, which must be baked out before welding.
A. Malleable B. Alloy C. Gray D. White
___________ bacteria are attracted to oil and can be found in areas that naturally contain oil or where oil is present
Fill in the blank(s) with correct word
People maintain their steady internal body temperature by:
A) Producing exactly the amount of heat needed to maintain body temperature. B) Producing more internal heat than needed and expelling the extra heat. C) Adjusting our internal temperature to the surrounding conditions. D) Sunning ourselves on radiant surfaces.
The EPA has estimated that ____ of the power used by the average television is used when it is off and in the standby mode.
A. one-fourth B. one-third C. one-half D. two-thirds