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【单选题】
制备纤维增强复合材料，最常用的增强纤维是( )。A.
碳纤维
B.
合成纤维
C.
玻璃纤维
D.
矿物纤维
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反馈参考答案：
举一反三
【简答题】纤维性骨营养不良
【单选题】The old man got on the bus, but nobody ______ for him. [ ]
A.
made a space
B.
made spaces
C.
made space
D.
made a room
【单选题】The man( )the gate when he realized that we had spotted him.
A.
made off
B.
made for
C.
made out
D.
made up
【单选题】— Peter didn't come to the meeting this morning. —I _____ him yesterday, but I was too busy and forgot it. [ ]
A.
should tell
B.
should have told
C.
had to tell
D.
had told
【简答题】鉴别诊断 纤维性骨营养不良、骨软病和佝偻病
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