Figure 143 the Graph in Figure 14

question 51

Multiple Choice

Figure 14.3 The graph in Figure 14.3 shows the incidence of polio in the United States. The period between 1945 and 1955 indicates a(n)

• A) epidemic level.
• B) communicable disease.
• C) sporadic infection.
• D) endemic level.
• E) pandemic.

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Definitions:

GL-5

A classification of gear lubricants, indicating the oil is suitable for high-pressure conditions and hypoid gears, common in automotive differentials.

TranSynd

A synthetic heavy-duty automatic transmission oil recommended by Allison, which states that it extends oil change intervals by 300 percent.

CD-50

A classification of heavy-duty gear oil, with "CD-50" indicating the oil's viscosity and performance characteristics according to specific standards.

Pinion Bearing Preload

The amount of force applied to pinion bearings, controlling how tightly they fit, influencing gear meshing and noise.