【简答题】C In 2004 US army research agency DARPA challenged engineers to try to build a self-driving car. Though the course had only barriers and no other traffic, none of the vehicles reached the end. ...
【单选题】A pair of synthetic gene circuits that count events — a long-stated goal for circuit engineers — was reported in _______. For one of these counter circuits, recombinase-mediated DNA rearrangement was ...