You want a class to have access to members of another class in the same package. Which is the most restrictive access that accomplishes this objective?()
A. public
B. private
C. protected
D. transient
E. default acce
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已知在198.15K时,ΔcHmθ(石墨)=-393.5kJ•mol-1,ΔcHmθ(金刚石)=-395.4kJ•mol-1,则C(石墨)→C(金刚石)的反应热ΔrHmθ为()kJ•mol-1。
男,30岁,因车祸撞伤腹部,诉腹痛,伴恶心、呕吐、呕吐物量少。X线透视见膈下游离气体,拟诊为胃肠道穿孔。手术治疗,术中应做到()。
A. 清理腹腔
B. 吸净脓液
C. 尽可能去除原发病灶
D. 安置腹腔引流
E. 以上均是