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【简答题】
传热一般采用逆流操作,但因为____________、____________、____________时采用并流操作。
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反馈参考答案：
举一反三
【简答题】________ v. to support an idea or a plan publicly 2. ________ n. enjoyment 3. ________ adj. being old and often valuable 4. ________ n. a short period of a particular activity or strong emotio...
【简答题】8×65.2×1.25-12.5×0.652×18．
【简答题】A． at B． on C． of D． to
【单选题】I didnt know what to do but then an idea suddenly ______ to me.
A.
occurred
B.
happened
C.
appeared
D.
lighted
【单选题】Suddenly an idea rushed into my head,“________ask Uncle Mark for help?"
A.
Why not
B.
Why don't
C.
How about
D.
What about
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