品牌认同包括三方面:_____、_____、_____。
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Why don’t you come ______ and have dinner ______me?
a. over…for
b. on…with
c. over…at
d. over…with
She had a paper ___.
a. publishes
b. publishing
c. published
d. publish
为什么说主冷液氧面上升或下降是冷量是否充足的主要标志?
埋弧自动焊对于厚度()mm以下的板材,可采用1型坡口 只需采用双面焊接,背面不用清根,也能达到全焊透的要求:
A. 12
B. 16
C. 20
D. 24