单项选择题In which sentence, the meaning of “be hand in glove with” is different from that in other sentences? A、They hope to be hand in glove with the investors to solve the problems. B、He was found to be hand in glove with the enemy. C、Several high-ranking diplomats were found to be hand in glove with enemy agents. D、Every official is hand in glove with him.
单项选择题如果上游工厂污染了下游居民的饮水,按科斯定律( ),问题即可以妥善地解决。 A、不管财产权是否明确,只要交易成本为零。 B、只要财产权明确,且交易成本为零。 C、只要财产权明确,不管交易成本有多大 D、不论财产权是否明确,交易成本是否为零
多项选择题下列哪些是网店产品常用的定价策略 A. 折扣定价 B. 买赠定价 C. 预售定价 D. 套餐组合定价
多项选择题汽轮机本体主要包括: A、润滑油系统 B、静止部分 C、转动部分 D、EH油系统
多项选择题游乐设施的设计原则是 A、安全性原则 B、适应性原则 C、便利性原则