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【单选题】
奥氏体冷却到()开始析出珠光体。A.
420oC
B.
148oC
C.
727oC
D.
127oC
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【单选题】Everyone has periods in their lives ______ everything seems very hard.
A.
when
B.
where
C.
which
D.
That
【单选题】Everyone has periods in their lives__________everything seems so hard.
A.
when
B.
where
C.
which
D.
that
【单选题】Everyone has periods in their lives ______ everything seems very hard.
A.
when
B.
where
C.
which
D.
that
【单选题】In my opinion, everyone has periods in their lives _______ everything seems very hard.
A.
when
B.
where
C.
which
D.
that
【简答题】Everyone has periods in their lives _______ everything seems so hard.
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