Why did Andrew Carnegies company first use iron to build bridges?

What are digital formats are descriptions of signals? What happens if nuclear reactor leaks? Write a recursive function CountOddNumbers that accepts as parameters an array of integers and the array size The function should count and return the odd numbers in the array of integer? Undercutting in welding? Example of end products in technical writing? How do you write mainframe program? Can we make robots with a mind of its own? How do we write a program to print your name age address using read data statement in QBASIC? What is the voltage drop running through resistor 1 resistor 1 equals 3 ohms? Where does the current come from that moves the needle on an analog clamp on meter? Write a sed command that swps first and second words in each line in a file unix and shell programming? What is a timing capacitor? Where can someone buy VOX amplifiers? How do you spell tecnally? How many portland cement in 1 cubic? The total resistance in a parallel circuit is the smallest resistor in the circuit? How long does it take water to go through concrete? How might wastewater in the home be recycled instead of being poured into the sewer system? Does an automated external defibrillator use ac or DC? Where is the cheapest place to buy televisions?