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【简答题】
FDM 打印机打印之前需要做哪些准备工作?
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反馈参考答案：
举一反三
【简答题】能换（ ）张 。 能换（ ） 和（ ）张 。
【简答题】有氧适能和肌适能的含义如何?怎样评定有氧适能和肌适能?
【单选题】Many people wrote to Johnson to find out，_________．
A.
what kind of whisky he had
B.
how to live longer
C.
how to become wealthy
D.
in which part of the neck to have an injection
【简答题】镁条燃烧时，化学能转化为______能和______能．
【单选题】What do we know about Lawrence after he became a teacher?
A.
He wrote many novels and stories.
B.
He worked with miners in his spare time.
C.
He escaped from the mines where his family lived.
D.
He learned how to write stories from a famous writer.
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