A Trial to Evaluate the Efficacy and Safety of Methoxyetomidate Hydrochloride for Injection (ET-26) for the Induction of General Anesthesia in Elective Surgery Subjects

freeze-dried powder injection，The initial dose is 0.8 mg/kg, with an additional 50% starting dose if needed. single dose, Infusion time was 60s ± 5s.

lipid emulsion ，The initial dose is 0.3 mg/kg, with an additional 50% starting dose if needed.single dose, Infusion time was 60s ± 5s.