选择题：As he is going to work in Holland for two years,he will be parted from his two children.

甲乙约定甲将房屋无偿提供给乙短期居住,乙无偿教甲女儿学钢琴,该约定属于()A.实践合同B.互易合同

The frame needs to be strong enough to support the engine.A:bottomB:surfaceC:topD:structure

根据线程安全的相关知识,分析以下代码,当调用test方法时i10时是否会引起死锁并简要说明理由。p

下列选项中,符合男女恋爱中基本道德要求的是( ) A.朝秦暮楚、见异思迁、多角恋爱 B.尊重对

Features such as height,weight,and skin color differ from individual to individual and from face to face.A:change B:vary C:alter D:convert