What capability of liquid engines is invaluable for achieving precise orbital insertion?
Answer
The ability to be shut down completely and restarted later in flight
Liquid engines can be throttled, shut down, and restarted, which is crucial for complex missions requiring multiple burns or in-space trajectory adjustments that solid motors cannot perform.

#Videos
Rocket Science for Everyone with Yale's Marla Geha - YouTube
Related Questions
Which engine architecture dominates large orbital launch vehicles today?What is the inherent limitation of a solid rocket motor once ignited?How is the thrust level managed in liquid propellant systems?What does Specific Impulse ($I_{sp}$) primarily measure in rocket performance?Generally, which propellant type achieves a higher specific impulse?What key structural elements are integrated into a single casing of a solid rocket motor?Which two substances are cited as examples of cryogenic propellants?What is a significant engineering challenge associated with using cryogenic propellants?What capability of liquid engines is invaluable for achieving precise orbital insertion?What advantage do liquid engines provide regarding reusability compared to most solid motors?Which composite approach was demonstrated by the Space Shuttle for heavy lift missions?