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【单选题】
用于从中药的水提取液中萃取亲脂性成分的溶剂是( )。
A.
乙酸
B.
乙酸乙酯
C.
丙酮
D.
丁醇
E.
乙醇
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【判断题】水和金属比较,水的导电性能更好
A.
正确
B.
错误
【判断题】水和金属比较水的导电性能更好。A. 对 B. 错
A.
正确
B.
错误
【判断题】C++在类模板的声明中,类模板名之后的尖括号内指定类型名,编译时将会用具体的类型取代该类型参数.
A.
正确
B.
错误
【单选题】患者男,摔伤致右前臂中段肿胀、畸形、异常活动2小时。查体:前臂骨擦音存在,异常活动明显。若该患者为闭合骨折,行手法复位石膏外固定24小时后,出现患肢持续性剧烈疼痛,进行性加重。此时首先应采取的措施是()。
A.
抬高患者肢体以减轻疼痛
B.
予以确切有效的止痛药
C.
立即解除石膏外固定
D.
局部予以硫酸镁湿敷
E.
改用其他外固定方法
F.
以上均正确
【判断题】水和金属比较,水的导电性能更好
A.
正确
B.
错误
【判断题】水和金属比较,水的导电性能更好。
A.
正确
B.
错误
【单选题】It may be debated whether individual neurons are 'tuned' to react to only a single tastant such as salt or sugar--and therefore signal only one taste quality--or whether the activity in a given neuron...
A.
illustrating the extent to which the physiological principles behind taste mirror those behind vision
B.
contrasting the available evidence for the labeled-line and across-neuron theories of taste
C.
describing the evolution of theories concerning the neurological mechanisms which determine taste
D.
demonstrating the superiority of holistic models over component models in analyzing neuron function
E.
showing that individual neurons play a negligible role in the physiological mechanisms of perception
【单选题】.The education department focuses on the__________education system,instead of only individual schools.
A.
diverse
B.
entire
C.
abrupt
D.
typical
【单选题】We should never _____ ourselves with a little book knowledge only.
A.
convince
B.
satisfy
C.
comfort
D.
benefit
【单选题】Only individual benefactors and ad hoc grants have made possible the ecological surveys already undertaken.
A.
additional
B.
governmental
C.
special
D.
organizational
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