Why are ejector pins made of hard yet shock resistant materials?
What will be an ideal response?
Ejector pins can meet resistance when ejecting a part that is stuck in the mold. This resistance can cause some impact forces on the pins which, if they were brittle, could cause them to break. In normal use, the ejector pins must be strong enough to push out the part. Furthermore, the constant sliding of the long ejector pins requires certain strength to keep from breaking and excessive wearing.
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In invading Maryland, one of General Lee's key objectives was to
A. improve the flagging morale of Confederate soldiers and officers. B. discourage foreign intervention by Britain and France in the war. C. destroy General McClellan's Army of the Potomac. D. capture President Lincoln and his Cabinet. E. inspire the Border States, particularly the wavering Maryland, to join the Confederacy and its secessionist cause.
Often presenters will write a summary of the important facts, sometimes called a(n) ____ summary.
A. graphic B. comprehensive C. concise D. executive
What do ruminants use as energy sources resulting from microbial digestion?
A. VFAs B. PFAs C. UFOs
____________________ of a design, or design project, can also be referred to as criteria, constraints, specifications, or requirements.
Fill in the blank(s) with the appropriate word(s).