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【单选题】
下列X射线机中适合放大射线照相的是（）A.
软X射线机
B.
铍窗口X射线机
C.
微焦点X射线机
D.
以上都是
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举一反三
【简答题】柴油机由机体组、()机构、() 机构、()系、()系、()系、起动系及进排气系组成。
【简答题】Form the video, we know we should no overload our prefrontal cortex in improving self-control. What is the best way to keep our resolution based on this theory?
【单选题】The ' nurture' theory tries to explain _
A.
it is our environment not biologically based instincts that determines how we will act
B.
human beings are completely shaped by their surroundings
C.
environment is more important than biological and genetic factors in shaping one' s behaviors
D.
one acts because he has to adapt himself to the environment
【单选题】Our theory is based on the simple _________ that communication always involves two parties.
A.
dilemma
B.
inclination
C.
premise
D.
inspiration
【简答题】Halliday proposes a theory of metafunctions of language, that is, language has _______, interpersonal and textual functions. 2. In any language words can be used in new ways to mean new things and...
【单选题】Which of the following is an accurate statement about equity theory? ( )
A.
It explains why a factory worker resents how much professional baseball players make.
B.
It suggests that people will feel fairly treated if they receive pay increases.
C.
It is based on perceptions of our own situation to others who are like us. (moderate)
D.
It is a theory based on needs.
【简答题】在三系制种中由不育系和保持系组成()，不育系和恢复系组成()。
【简答题】“两区三系”制种法使用了______系、______系和______系。
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