对事务日志的正确描述是______。
A．事务日志记录了对数据库的所有操作
B．事务日志必须严格按照服务数据库进行修改的时间次序记录
C．事务日志文件应该与数据库文件放在同一个存储设备上
D．事务日志的主要目的是应用于审计
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复数z满足（z-3）（2-i）=5（i为虚数单位），则z的共轭复数
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根据对话情景填入所缺单词，每空一词。
A: Hi, Vera. 1 was your vacation?
B: It was great!
A: Where did you go?
B: 1 went to Tokyo 2 my family.
A: Really? Wow! 3 did you do there?
B: Well, we went to a lot of museums.
A: Oh, how were they?
B: They were really 4 .But they were also very 5 .
A: 6 you go shopping?
B: Yes, I did.
A: And how were the people? Did you meet any 7 people?
B: Yeah. The people were really 8 . We 9 dinner at their house.
A: How was the food?
B: It was 10 .I liked it very much
患者，男性，54岁，上颌左侧牙列缺损，
A.
B.
C.
D.
E.
汶川大地震使当地居民的饮用水受污染，以下关于饮用水处理方法不合理的是（ ）
A．用明矾使悬浮物沉降下来
B．用漂白粉进行消毒杀毒
C．只要无色透明的水就可以放心饮用
D．饮用前加热煮沸
在磁共振基本原理中，“停止射频脉冲，纵向磁化逐渐恢复至原磁化量的63%，所需时间”称为（）
A.弛豫
B.纵向磁化
C.横向磁化
D.纵向弛豫时间（T1）
E.横向弛豫时间（T2）