Aerospace, petroleum, and automotive industries
        
             
        
        
        
Answer:
def is_dual( array):
    if len(array) % 2 == 0:
        count = 0
        for i in range(0, len(array)//2, 2):
            if array[i] + array[i+1] == array[0] + array[1]:
                count += 1
        if count == len(array)//2:
            return True
        else:
            return False
Explanation:
The python program defines a function called is_dual that accepts an array parameter and check if the array is dual. If it meets the condition, the function returns true but returns false when the array is not dual.
 
        
             
        
        
        
Answer:
B. It uses "Light-years" to talk about time, but a light-year is a unit of distance.
Explanation:
Light-Year is a term used in astronomy to describe the distance that light travels in a year. Informally, astronomers use the light year to describe distances between planets, stars, moons and other astronomical bodies.
Light-years are sometimes mistakenly thought of as units of time — because of the year — but they're actually units of distance, equal to about six trillion miles. In 1851, the light year was first used for defining distances by a German astronomer who compared it to a "hiking hour," or the distance a person can hike in one hour. The term can also figuratively mean "a long way:" 
 
        
             
        
        
        
Answer: -17
Explanation:
Our random number is 17. Let's go through line by line. 
- value is a random number picked which is 17
- valueB = 17 / 2 = 8.5
- If value is greater than 0 AND value has a remainder of 1, we will set the value to value* -1. 
- Value is now 17 * -1 = -17
Let's quickly calculate value mod 2. 17 % 2 = is 1. If you're wondering how we did that, the remainder after dividing 8 into 17 twice is 1, because 17 - 16 = 1.
We stop after line 4 because we stop the conditional statement after one condition is filled.