Where did the “velvet revolution” take place?
a. Czechoslovakia
b. Hungary
c. Poland
d. East Germany
a. Czechoslovakia
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____________________ can be described as the amount of oxygen per given volume of space, or in other words, the thickness of air.
Fill in the blank(s) with the appropriate word(s).
Young children in kindergarten are taught to wash their hands with a ____ wash with both soap and water
a. 10-second c. 30-second b. 20-second d. 60-second
Which type of regenerative braking system uses an electro-hydraulic system?
A) Parallel B) Series C) Both Series and parallel D) Neither series nor parallel
The severity of water quench sometimes causes:
A) One inch thick sections to harden clear through B) Distortion and cracking C) Bubbles to form inside the steel D) Lack of hardening in W1 steels