 Why was the Space Patrolman surprised that Tolliver referred to Betty as "Miss Koslow"?
On the bulletin board, Tolliver's name stood out beside the number of one of the airtight tractors used between the dome city and the spaceport, or for hauling cross-country to one of the mining domes. He soon found that there was nothing for him to do but hang around the garage in case a spaceship should land. He enlarged upon other dangers to be encountered on the satellite, taking care to impress the newcomer with the daredeviltry of John Tolliver, driver of "missions" across the menacing wastes between dome and port. The pilot stared at Betty, trying to recall pictures he had seen of the elder Koslow. He stared unbelievingly at Betty, and Tolliver thought he muttered something about "just landed."
 It was a cover name, not her real name.
 It was a cover name, not her real name.  He realized that she was the boss' daughter.  The Space Patrolman didn’t know her name.  She wasn’t supposed to tell anyone who she was.