【单选题】【消耗次数：1】
交感和副交感神经节前纤维释放的递质是
①
去甲肾上腺素
②
乙酰胆碱
③
肾上腺素
④
多巴胺
⑤
5-羟色胺
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相关题目
【单选题】
肾上腺素和去甲肾上腺素对心血管的效应是（）
①
两者的升压效应相同
②
两者引起的心率变化相同
③
小剂量的肾上腺素使骨骼肌微动脉舒张
④
去甲肾上腺素使胃肠道微动脉舒张
⑤
在完整机体中，注射去甲肾上腺素后引起血压升高，心率加快
随机题目
【单选题】
Noticeable changes of English words in recent years consist of the following characteristics EXCEPT___________ .
①
increasing use of abbreviation
②
increasing use of open compounds
③
increasing use of clauses
④
increasing use of conversion
【单选题】
Historical linguistics reveals that the English vocabulary sprang from three major root sources:_______.
①
Italian, Latin, Greek
②
French, Germanic, Greek
③
Germanic, Latin, Greek
④
Germanic, Italian, French
【判断题】
As an individual branch of linguistics, lexicology has nothing to do with other branches of linguistics.
①
正确
②
错误
【判断题】
Two more newly emerged disciplines that are related to lexicology are computational lexicology and phraseology.
①
正确
②
错误
【判断题】
A word is a symbol, a representation of something in life, either physical or abstract.
①
正确
②
错误
【判断题】
Although a society is changing , the vocabulary in a language is always stable, and is never changing.
①
正确
②
错误
【单选题】
In language studies, linguists may investigate the history and stages of language change in a course of time. This is called _______ approach.It is historical lexicology.
①
synchronic
②
descriptive
③
diachronic
④
general
【单选题】
Lexicology, a branch of linguistics, deals with_______of words.
①
the nature
②
the history
③
the meaning and use
④
all of the above
【单选题】
Which of the following types of lexicology refers to the description of the vocabulary of a given language?
①
General lexicology
②
Special lexicology
③
Historical lexicology
④
Descriptive lexicology