What altimeter setting is required when operating an aircraft at 18,000 feet MSL?

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How can you determine if another aircraft is on a collision course with your aircraft?

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An airplane is overtaking a helicopter. Which aircraft has the right-of-way?

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(Refer to figure 52, point 4) The terrain at the obstruction approximately 8 NM east southeast of the Lincoln Airport is approximately how much higher than the airport elevation?

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