What is the name for the adjustable lens opening?
a. f-stop
b. beam splitter
c. pick up device
d. iris
d
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Mendelssohn's Piano Trio in D Minor shows the influence of which Classical period composer?
A) Haydn B) Mozart C) Beethoven D) C. P. E. Bach
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The contract of the American Federation of Musicians (AFM) labor union calls for additional payments when any national commercial runs beyond an initial cycle of how many weeks?
What will be an ideal response?
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