【单选题】一个企业年金计划应当仅有()个受托人、()个账户管理人和()个托管人,可以根据资产规模大小选择适量的投资管理人。
【判断题】技术矛盾和物理矛盾的区别在于它们的参数不同
【单选题】—_______ a volunteer is great. —I think so. Some of us want _______ volunteers for the London Olympics. [ ]
【单选题】What is the factor influencing the interface position?
A.
oil viscosity and density
B.
throughput and back pressure