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【简答题】
何谓耐久性,影响材料耐久性的因素有哪些?
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反馈参考答案：
举一反三
【单选题】I wonder____ she will come back or she will go straight to Beijing. [ ]
A.
that
B.
what
C.
if
D.
whether
【单选题】Bill Gates is one of those who are said to be ______ , able to rack huge profits at every turn.
A.
on the ship
B.
on the plane
C.
on the gravy train
D.
on the rocks
【单选题】No one knew ________. [ ]
A.
she will come
B.
if she would come
C.
if she would come or not
D.
whether she will come or not
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