So to increase database concurrency, it is a good idea to choose B ~ ( link ) - tree as database index. 因此,选择B(ACB)链树作为索引能提高数据库的并发性能。
Methods Choose 80 inpatients divide team A and B, A was the hypertension patients with paroxysmal atrial fibrillation, B was without. 方法选择我院住院患者80例,分为A、B组,A组为有阵发性心房颤动的高血压病患者,B组为无阵发性心房颤动的高血压病患者;
Figuring the expected payoff logically, one should choose lottery a the first four times and lottery B the last six. 合理计算预期收益后,人们应该在前四组中选彩票A,在后六组中选彩票B。
CC may choose to exercise the rights granted under ( a ) the public license or licenses, if any, you apply to your materials or ( b ) this Agreement. CC可以选择行使所授予的权利(a)项下的公共许可证或执照,如果有的话,你申请您的材料或(b)本协议。
There are a lot of expressions in English about dancing. Choose the correct word from list A to complete the phrase in list B. 英文里有很多和跳舞有关的措词,从表A选出正确的字套入表B的&里。