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【单选题】
门电路中,最基本的逻辑门是( )、或以及与门 。A.
与门
B.
非门
C.
或非门
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【单选题】关于舌下神经,正确的是
A.
一侧舌下神经麻痹时，伸舌向健侧偏斜
B.
一侧舌下神经麻痹时，伸舌向患侧偏斜
C.
一侧舌下神经麻痹时，病侧舌肌可见明显肌束颤动
D.
核上性损害时，伸舌向病灶侧偏斜
E.
核上性损害时，可见病侧舌肌萎缩
【多选题】苯甲酸及其钠盐属于酸性防腐剂,在酸性条件下有明显的抑菌作用,但对_______作用较弱。其作用效果与pH有很大关系,在pH___ ____以上时,对很多霉菌无抑制效果。苯甲酸的最适pH为_____
A.
产酸菌
B.
5.5
C.
2.5-4.0
【简答题】Once when I was six years old I saw an amazing picture in a book called True Stories from Nature about the primeval (原始) forest. It was a picture of a boa constrictor (大蟒蛇) in the act of swallowing an...
【多选题】Why countless numbers of people like to have their after meal tea?
A.
Medically, the tea leaf contains a number of chemicals, which may promote digestion.
B.
In addition, tea contains various vitamins.
C.
In summer, tea can dispel the heat and bring on instant cool with a feeling of relaxation
D.
For smokers, tea helps to discharge nicotine out of the system.
【简答题】Fill in each of the blanks in the following sentences with a word listed below. Change the form where necessary. privilege perception unburden literally immediate selective digestion accessible specia...
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