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【单选题】
下列有关反射和反射弧的关系的说法中，正确的是（ ）A.
只要反射弧完整，就会出现反射
B.
反射和反射弧完全相同
C.
反射必须通过反射弧来完成
D.
反射可以不全由反射弧来完成
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【判断题】Image distance is the distance from vertex to the image. Object distance is the distance from the object to vertex.
A.
正确
B.
错误
【多选题】人生观是人们对人生目的和人生意义的根本看法和态度。下列属于人生观范畴的有( )
A.
人为什么活着
B.
人怎样活着才有价值
C.
如何对待人生道路上的困难和矛盾
D.
人类社会的发展规律是什么
E.
思维和存在的关系如何
【单选题】The preferred shaft center distance is from times the distance between the rollers.
A.
from 20 to 25
B.
from 25 to 35
C.
from 40 to 45
D.
from 30 to 35
【单选题】I only know it is a ____ distance away from here, but I don’t know ____ the distance exactly is.
A.
great, how far
B.
great, what
C.
far, how far
D.
far, what
【单选题】They often resent the pressure they’re feeling and keep a distance from their parents or even run away from home.
A.
They often resent the pressure and keep a distance or even run away from home.
B.
They often resent the pressure they’re feeling and keep a distance from their parents or even run away .
C.
they’re feeling and keep a distance or even run away from home.
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