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【简答题】
何谓碱—骨料反应?混凝土发生碱—骨料反应的必要条件是什么?防止措施是什么?
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举一反三
【单选题】______ Chemistry is a branch of Chemistry.
A.
Applying
B.
Apply
C.
Applied
D.
Applicant
【单选题】What does energy tycoon Pickens try to say in his Giving Pledge letter?
A.
Blessed are those who inherit large fortunes
B.
The more you give, the happier you will be
C.
Leaving a fortune to one's children is unwise
D.
Philanthropy can help free
【简答题】有人说：“因为海水含盐量高，所以海水中溶氧含量比淡水的低”。你认为这种说法对不对？
【简答题】1987年，我国第一家专业性证券公司（ ）成立。
【单选题】—Is chemistry more difficult than physics? — No, chemistry isn't as _____ as physics. [ ]
A.
easy
B.
difficult
C.
easier
D.
more difficult
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