This method of casting injects molten nonferrous metal into a steel or iron die under high pressure, where castings are produced quickly and economically.
a. centrifugal casting
b. die casting
c. permanent casting
d. sand casting
b. die casting
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Americans experienced a great wave of national unity and solidarity in the wake of the September 11, 2001 terrorist attacks. Yet within a few years they were very bitterly divided over both political goals and tactics. What was the primary cause of these divisions? Were they debates over longstanding cultural and moral differences, or were the divisions directly related to the specific policies and conduct of the Bush administration?
What will be an ideal response?
The accompanying figure shows some typical symbols used for plantings. Symbol 2 signifies ____.
A. deciduous trees B. palm trees C. coniferous trees D. low shrubs
What is the purpose of the labyrinth seal (drum groove) used on a drum brake?
A) Keeps water out of the drum B) Reduces cooling C) Reduces noise D) Allows the shoes to collect dust
When low-carbon steel with a carbon content of less than 0.30 percent is in freezing temperatures, it must be preheated to a temperature above _____
A) 100°F (38°C) B) 500°F (260°C) C) 40°F (4°C) D) 70°F (21°C)