Q.～doctrine不得阻止履行责任原理(指合同法中规定合同当事人应承担不得阻止对方当事人履行合同的默示责任原理，也称为～of performance doctrine)
P.～of accidents防止事故发生，预防事故

---

～of burglary防盗

---

～of corruption防止贪污

---

～of crime预防犯罪，防止犯罪

---

～of cruelty防止虐待

---

～of disease疾病防治

---

～of enemy agent防特，预防特务破坏

---

～of epidemics防疫，预防瘟疫

---

～of estopple防止翻供

---

～of expenditures for illegal purposes防止不法支出

---

～of fire防火

---

～of fraud防止欺诈

---

～of loss防止损失

---

～of misappropriation of funds防止滥用基金

---

～of overspendlng of appropriations防止超支

---

～of performance doctrine不得阻止履行学说(cf.～doctrine)

---

～of thievery防盗