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[名词解释] 热值

颈外静脉穿刺点在下颌角与锁骨上缘中点() ["之上1\/3处","之上1\/2处","之下1\/4处","之下1\/3","平环状软骨处"] 适宜采用行为治疗() ["精神分裂症","抑郁障碍","适应障碍","神经症","人格障碍"] 根据底物浓度一定时酶活性与酶量成正比,当底物浓度范围设计在10~20Km、底物消耗率为1%~5%时,其初速度可达最大速度的() ["90%~95%","85%~90%","80%~85%","75%~80%","70%~75%"] 简述国际直接投资的特点有哪些? 适宜采用患者中心治疗() ["精神分裂症","抑郁障碍","适应障碍","神经症","人格障碍"] 热值
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