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【单选题】
焊接接头不包括()。A.
焊缝
B.
熔合区
C.
热影响区
D.
退火区
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反馈参考答案：
举一反三
【单选题】The present made her__________
A.
to be happy
B.
be happy
C.
happy
D.
that she became happy
【单选题】The old man leads ______happy life now, but he will never forget ______hard time when he was poor.
A.
the, a
B.
/; the
C.
the; /
D.
a, the
【单选题】My neighbor, who works in ___ university , leads ____ happy life with his wife and two sons.
A.
a; a
B.
an; the
C.
the; a
D.
an; a
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