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【多选题】
以下关于铝与铝合金的说法中正确的是( )A.
工业纯铝牌号L1、L2、L3...... L7其纯度逐渐变低
B.
铝合金强度比纯铝高几倍，但却可以保持纯铝的特性
C.
纯铝无低温脆性，但具有少量的磁性
D.
LY12是典型的硬铝牌号
E.
铝镁合金的耐蚀性好，但强度不高
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举一反三
【简答题】done to call in beat up wind up trial and error at all costs Don’t ____ yourself __ over something that you have no control over.
【简答题】修长的;细长的;苗条的;微小的;微薄的
【单选题】Don’t _________ if things go wrong.
A.
set yourself up
B.
get yourself up
C.
beat yourself up
【单选题】Don’t beat yourself up if things go wrong because they will.The underlined words mean:
A.
raise yourself up
B.
blame yourself too much
C.
beat others
D.
hit yourself on the head
【简答题】Fill in the blanks with the expressions given below. Change the form where necessary. down to call in beat up wind up trial and error at all costs Don’t ____ yourself __ over s...
【单选题】Don’t ____ yourself _____ over something that you have no control over.
A.
call...in...
B.
beat...up...
C.
wind...up...
D.
down...to...
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