Figure 20-16
?

What does the accompanying figure show?

What will be an ideal response?


The figure shows a photodetector used to detect the presence of an object on the conveyor line. When the object passes between the transmitter and receiver units, the light beam is broken and the detector activates.

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Figure 21-5 In the accompanying figure, at the far right-hand side is the notation (-08, 24, 14). What do these numbers indicate?

What will be an ideal response?

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The relatively easy movement of small groups or individuals in a liquid is called ____________________.

Fill in the blank(s) with the appropriate word(s).

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Which is an example of an ornamental grass?

A) Clematis B) Switchgrass C) Sedum D) Snowdrop

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Which of the following jobs will be involved in solar energy? __________

a. Planning and sales b. Field service technicians c. Project managers and architects d. Electricians and electrical transmission technicians e. All of the above

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