"安慰剂效应"是指让病人在不知情的情况下服用完全没有药效的假药,却能得到与真药相同甚至更好效果的现象。"安慰剂效应"得到了很多临床研究的支持。对这种现象的一种解释是:人对于未来的期待会改变大脑的生理状态,进而引起全身的生理变化。以下陈述都能支持上述解释,除了()
A. 安慰剂生效是多种因素共同作用的结果。
B. 安慰剂对丧失了预期未来能力的老年痴呆症患者毫无效果。
C. 有些病人不相信治疗会有效果,虽然进行了正常的治疗,其病情却进→步恶化。
D. 给实验对象注射生理盐水,并让他相信是止痛剂,实验对象的大脑随后分泌出止痛物质内啡肽。
查看答案
有一群20日龄小鸡发病,最初有些鸡啄自己的泄殖腔。病鸡羽毛蓬松,采食减少,常打堆在一起,精神萎靡,随即出现腹泻,排出白色黏稠和水样稀便,泄殖腔周围的羽毛被粪便污染。严重者鸡头垂地,闭眼呈昏睡状态。在后期体温低于正常,严重脱水,极度虚弱而死亡。该病初步诊断为()
A. 新城疫
B. 禽流感
C. 肾型传染性支气管炎
D. 传染性法氏囊病
E. 痛风
在键槽命令中,以下哪项不包含在内()。
A. 腔体
B. 矩形槽
C. U型槽
D. 球端槽
If the salvor has carried out salvage operations in respect of a vessel which by itself or its cargo threatened damage to the environment and()a reward under Article 13 at least equivalent to the special compensation assessable in accordance with this Article,he shall be entitled to special compensation from the owner of the vessel equivalent to his expenses as herein defined.
A. has earned
B. has failed to earn
C. has rendered
D. has failed to render
You suspect unauthorized data manipulation language (DML) operations on a particular table. Youwant to track users who are performing the transactions and the values used in the transactions. You alsoplan to transfer these values to another table for analysis. How would you achieve this()
A. by using triggers
B. by using Data Pump
C. by using external tables
D. by using anonymous PL/SQL block