How can infrared light be used to detect refrigerant?
A) Infrared sensors interact with oxygen at different rates depending on the refrigerant exposure.
B) Most gases absorb infrared light at a characteristic frequency.
C) Infrared sensors change resistance in the presence of refrigerant.
D) Refrigerant turns the infrared light blue.
B
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The Moore family owns a 20-acre mini farm. They have 2 acres of apple trees that are 28 feet apart and 1.5 acres of peach trees that are 20 feet apart. The trees are set far enough apart to allow room to drive between them. The apple trees average 12 bushels per tree selling for $11.25 per one-half bushel. The peach trees average 4.8 bushels per tree selling for $7.50 per peck. They have a large strawberry patch that yielded 3,400 quarts. Half of the patch was picked by the public at $2.25 per quart with 271/ /2 percent loss. For the other half, they hired pickers at $0.75 per quart and sold the berries for $3.50 per quart. They planted 1.5 acres of sweet corn. They made three plantings one week apart. They had a population of 20,000 plants per acre, 80 percent of the plants had
marketable ears that were sold for $3.50 per dozen. They had a 12 percent loss of the marketable ears that were not sold. They had a large tomato patch that averaged 45 pounds of tomatoes per day for 95 days. They sold the tomatoes for $1.50 per pound. They had an average loss of 20.5 percent from unsold tomatoes. The children had a pumpkin patch that yielded 224 pumpkins. They had 120 large pumpkins selling for $3.50 per pumpkin, 78 smaller pumpkins selling for $2 per pumpkin, and the remaining pumpkins were given to their friends. Their total expense was $46,543.65 not counting their labor. What was their income from their mini farm? What will be an ideal response?
The secondary resistance consists of banks of three uniform ____ sections.
a. X b. star c. delta d. wye
Indole-3-acetic acid is an example of the plant hormone ________.
Fill in the blank(s) with the appropriate word(s).
These are used for perfect alignment of accurately constructed parts and for parts that have to be taken apart frequently.
a. taper pin b. rivet c. key d. dowel pin