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【单选题】
碱性焊条的烘干温度一般需( ),保温1〜2h。A.
150〜200℃
B.
250〜300℃
C.
350〜400℃
D.
450〜500℃
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举一反三
【单选题】What are the major factors that determine the success of Asian Americans?
A.
A solid foundation in basic mathematics and Asian culture.
B.
Hard work and intelligence.
C.
Parents' help and a limited knowledge of English.
D.
Asian culture and the American educational system.
【单选题】What are the major factors that determine the success of Asian Americans?
A.
A solid foundation in basic mathematics and science.
B.
Hard work and intelligence.
C.
Parental help and a limited knowledge of English.
D.
Asian culture and the American educational system.
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