Which could be usually combined with local anaesthetics? ( ) A: Phentolamine B: Norepinephrine C: Adrenaline D: Acetylcholine

The drug that can be used to relieve urinary urgency, urinary frequency and incontinence after prostatectomy is ( ). A: pilocarpine B: acetylcholine C: atropine D: physostigmine E: neostigmine

The main cause of inadequate ammonia clearance at severe hepatic dysfunction is ( ) A: Impairment of glutamine synthesis B: Impairment of urea synthesis C: Impairment of acetylcholine synthesis D: Impairment of glutamic acid synthesis E: Impairment of γ-aminobutyric acid synthesis