Question: In this version of the character, why is he named David Banner instead of Bruce Banner?
Question: How does David get one job after another without having a résumé or any references?
Answer: Even today, it's totally possible to get hired for random temporary jobs without a résumé or references, especially if you're getting paid under the table. Most of my early jobs were like that. Local businesses I'm familiar with needed a hand for a few weeks, and I needed a little extra money. Boom! I got a temporary under-the-table job where I got a couple hundred bucks a week in cash to just come in and help out. Technically not legal, but lots of places do it. And from what I've read, back in the 70s a lot of these types of gigs were more widespread, hence it was easy to find them.
Question: Why was the Hulk never called the Hulk, and who was he accused of killing?
Answer: The Hulk is accused of killing Dr. David Banner and Dr. Elenia Marks. After the lab explodes, McGee sees the Hulk emerge carrying the body of Dr. Marks, so he assumed the creature is guilty. It was McGee who caused the explosion. After following the trail of evidence of the Hulk to the lab, he hides when David and Elania arrive. In a darkened storage closet, he knocks over a bottle of flammable liquid. He confronts them, then is forced to leave by Banner, who says, "Don't make me angry, you wouldn't like me when I'm angry." When Banner reenters the lab, it explodes, caused by the Hulk when it went on a rampage trashing the lab, causing many electrical systems to catch fire, thus igniting the flammable liquid.
Answer: The phrase "Incredible Hulk" is coined by Jack McGee in one of his tabloid articles. He's trying to find proof of the Hulk because no one takes his story seriously, so probably nobody takes his name for the creature seriously either.
Chosen answer: Bruce has always been the character's middle name. In the comics he is Robert Bruce Banner, here he is David Bruce Banner. Apparently the executives behind the show preferred the name David.