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【多选题】
制造轴类零件的常用的材料有（ ）。A.
钢材
B.
铸铁
C.
非金属
D.
有色金属
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反馈参考答案：
举一反三
【单选题】The careful editor checked the blueprints for fear that she should have ________ something.
A.
leaked
B.
exposed
C.
overlooked
D.
revealed
【单选题】The careful editor checked the blueprints for fear that she could have _____ something.
A.
leaked
B.
exposed
C.
overlooked
D.
revealed
【简答题】There are three kinds of goals: short-term, medium-range and long-term goals. Short-range goals are those that usually deal with current activities, which we can apply on a daily basis. Such goals can...
【单选题】（英语类学生必做） Sleep is important to us because it helps restore organs and tissues in our body. But how much sleep do we actually need? For most of us, eight hours seems to be about the right amount. Yet ...
A.
across
B.
away
C.
along
D.
over
【单选题】The careful editor checked the blueprints for fear that she might have _____ something.
A.
viewed
B.
escaped
C.
bewildered
D.
overlooked
【简答题】半剖视图适用于何种机件?
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