从原则上讲,社会保障基金由国家、企业、个人三方共同负担。德国社会保障制度以()为核心内容,并辅以社会救济和社会福利为特征。
参考答案:社会保险制度
—Did you play cards yesterday?
—________[ ]
A. Yes, I play cards with my friends.
B. Yes, I played cards with my friends.
C. Yes, I am playing cards with my friends.
红外线气体分析仪薄膜电容检测器电容短路会造成仪表()。
A、指示回零
B、指示满度
C、零点连续正漂
D、灵敏度下降