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【简答题】
language is a system of _________ ____ symbols used for human communication. 2. Linguistics is generally defined as the _______ study of ________. 3. If a linguistic study describes and analyses the language people actually use, it is said to be _____________; if it aims to lay down rules for “correct” behavior, it is said to be _____________. 4. In modern linguistics, _______ study seems to enjoy priority over____ study. T he reason is that successful studies of various states of a language would be the foundation of a historical study. 5. Langue refers to the _______ linguistic system shared by all members of a speech community; and parole refers to the ________ of langue in actual use. 6. Chomsky defines competence as the ideal ’ s user ’ s ______ of the rules of his language, and performance, the actual _________ of this knowledge in linguistic communication . 7. ” A rose by any other name would smell as sweet ” . This famous quotation from Shakespeare illustrates that language has the design feature of _____. 8. The property of __________ of language provides a speaker with an opportunity to talk about a wide range of things, free from barriers caused by separation in time and place. 9. Language is a system, which consists of two sets of structures, one of ________, and the other of _________. T his double articulation of language enables its users to talk about anything within their knowledge. 10. An English speaker and a Chinese speaker are both able to use language, but they are not mutually intelligible, which shows that language is culturally _________.
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举一反三
【单选题】pH梯度萃取法通常适用于分离下列哪类化合物
A.
黄酮
B.
强心苷
C.
挥发油
D.
香豆素
E.
【单选题】关于生物法脱氮流程,不正确的是( )
A.
一级硝化及反硝化中硝化池同时进行碳的氧化
B.
一级、二级在反硝化之前都要投加有机碳源
C.
一级、二级中的曝气池主要起充氧作用
D.
一级、二级中的沉淀池都有回流污泥排出
【简答题】合格标志认证是以()为基础的自愿性认证,发给合格认证标志;安全标志认证是以()为基础的强制性认证,发给安全认证标志。
【单选题】pH 梯度萃取法通常用于分离
A.
糖类
B.
萜类
C.
甾体类
D.
蒽醌类
【单选题】pH梯度萃取法通常用于分离
A.
糖类
B.
萜类
C.
鲻体类
D.
蒽醌类
E.
香豆素
【判断题】安全格认证标志是以安全标准为基础的自愿性认证,认证合格后发给 “合格认证标志”。 ( )
A.
正确
B.
错误
【单选题】当痤疮皮疹初起时,颜色较红、疼痛,可采取什么 方法,帮助消退炎症
A.
热敷
B.
冷敷
C.
高频电疗
D.
奥桑喷雾
【单选题】关于生物法脱氮流程,不正确的是( )
A.
. 两段生物脱氮工艺中硝化池同时进行碳的氧化
B.
三段、两段活性污泥脱氮工艺在反硝化之前都要投加有机碳源
C.
前置缺氧生物脱氮工艺反硝化不需要投加有机碳源
D.
前置缺氧生物脱氮工艺硝化池不需要投加碱
【单选题】pH梯度萃取法通常用于分离( )
A.
糖类
B.
萜类
C.
甾体类
D.
蒽醌类
E.
香豆素
【单选题】合格认证是以技术标志为基础的( )。
A.
抽查型认证
B.
普查型认证
C.
强制性认证
D.
自愿性认证
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