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【单选题】
A characteristic feature of ( ) is their ability to change the polarization direction to the opposite one under the influence of the applied electric field.A.
piezoelectrics
B.
ferroelectrics
C.
dielectrics
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【单选题】_____, I was afraid of the dark, then I went to bed with my bedroom light ____.
A.
To begin, off
B.
Begin with,on
C.
Start , off
D.
To begin with, on
【简答题】My bedroom is too small for all my books. My bedroom is not ____________________ for all my books.
【单选题】Free nerve endings contain receptors that encode the sensation of
A.
Fine touch
B.
Vibration
C.
Pressure
D.
Pain
【判断题】One feature of news report is meaning contraction, that is, using the most amount of form to encode the least amount of meaning.
A.
正确
B.
错误
【简答题】连词成句。 1. own, have, I, my, bedroom (.) ______________________________________________________ 2. room, I, a, in, have, trash, bin, my (.) ______________________________________________________ 3. your...
【简答题】在多轨合成界面中做好合成后,可以将多个轨道的声音 _______ 成一个独立的声音文件。
【单选题】( ) encode the drug-resistance.
A.
F plasmid
B.
Vi plasmid
C.
R plasmid
D.
Ent plasmid
E.
Col plasmid
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